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A Octoseptuagintillion (1 Octoseptuagintillion) is 10 to the power of 237 (10^237). This is an immensely colossal number!

How many zeros in a Octoseptuagintillion?

There are 237 zeros in a Octoseptuagintillion.

What's before Octoseptuagintillion?

A Septenseptuagintillion is smaller than a Octoseptuagintillion.

What's after Octoseptuagintillion?

A Novenseptuagintillion is larger than a Octoseptuagintillion.


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

Is Octoseptuagintillion the largest number?

Octoseptuagintillion 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.

Octoseptuagintillion written out

Octoseptuagintillion is written out as:


Big Numbers

This is just one of many really big numbers!

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