There's quadrillion, quintillion, sextillion, septillion, octillion, nonillion, decillion and more.
Zillion sounds like an actual number because of its similarity to billion, million, and trillion, and it is modeled on these real numerical values. However, like its cousin jillion, zillion is an informal way to talk about a number that's enormous but indefinite.
A "googol" is the number 1 followed by 100 zeroes. The biggest number with a name is a "googolplex," which is the number 1 followed by a googol zeroes.
A unit of quantity equal to 1066 (1 followed by 66 zeros).
Then, you finally reach Millinillion. Repeat with those numbers to reach Billinillion. After that comes a Trillinillion, Quadrillinillion, Quintillinillion, Sextillinillion, Septillinillion, Octillinillion, Nonillinillion, and on...
A millillion (alternately millinillion, milliatillion or milletillion) is equal to 103,003 in the short scale, or 106,000 in the long scale (this number is also called Platillion). It is made by combining "mille" (1,000) with the standard -illion suffix, which is itself derived from "mille".
Written out in ordinary decimal notation, it is 1 followed by 10100 zeroes; that is, a 1 followed by a googol of zeroes.
None of the words jillion, zillion, squillion, gazillion, kazillion, bajillion, or bazillion (or Brazilian) are real numbers.
Googol. It is a large number, unimaginably large. It is easy to write in exponential format: 10100, an extremely compact method, to easily represent the largest numbers (and also the smallest numbers). With the smallest of effort, you can also present it in the full format: a “one” followed by one hundred “zeros”.
A googolplex is a 1 followed by a googol of zeros.
It's impossible to write out, but in scientific notation it looks like 1 x 1010^100.
a cardinal number represented in the U.S. by 1 followed by 303 zeros, and in Great Britain by 1 followed by 600 zeros.
The case for "there isn't one." A centillion is the number 1 followed by 303 zeros. It is the highest number given a name under the convention that every 3 zeros you add gets a new name (thousand, million, billion, trillion, etc.) So there is no "next number" in that naming sequence.
A unit of quantity equal to 10183 (1 followed by 183 zeros).
A unit of quantity equal to 1090 (1 followed by 90 zeros).
A unit of quantity equal to 10153 (1 followed by 153 zeros).
A unit of quantity equal to 1099 (1 followed by 99 zeros).
After a billion, of course, is trillion. Then comes quadrillion, quintrillion, sextillion, septillion, octillion, nonillion, and decillion.
What's bigger than a googolplex? Even though a googolplex is immense, Graham's number and Skewes' number are much larger. Named after mathematicians Ronald Graham and Stanley Skewes, both numbers are so large that they can't be represented in the observable universe.
Quattuorvigintillion. A unit of quantity equal to 1075 (1 followed by 75 zeros).
1,000,000,000 (one billion, short scale; one thousand million or one milliard, one yard, long scale) is the natural number following 999,999,999 and preceding 1,000,000,001.
US : a number equal to 1 followed by 45 zeros see Table of Numbers. also, British : a number equal to 1 followed by 84 zeros see Table of Numbers.