Create Free Account | Log In


A Octocentillion (1 Octocentillion) is 10 to the power of 327 (10^327). This is a tremendously astronomical number!

How many zeros in a Octocentillion?

There are 327 zeros in a Octocentillion.

What's before Octocentillion?

A Septencentillion is smaller than a Octocentillion.

What's after Octocentillion?

A Novencentillion is larger than a Octocentillion.


A Octocentillionaire is someone whos assets, net worth or wealth is 1 or more Octocentillion. It is unlikely anyone will ever be a true Octocentillionaire. If you want to be a Octocentillionaire, play Tap Tales!

Is Octocentillion the largest number?

Octocentillion is not the largest number. Infinity best describes the largest possible number - if there even is one! We cannot comprehend what the largest number actually is.

Octocentillion written out

Octocentillion is written out as:


Big Numbers

This is just one of many really big numbers!

Play Now

Choose your device:

FREE to download and play!