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A Decillion (1 Decillion) is 10 to the power of 33 (10^33). This is an immensely big number!

How many zeros in a Decillion?

There are 33 zeros in a Decillion.

What's before Decillion?

A Nonillion is smaller than a Decillion.

What's after Decillion?

A Undecillion is larger than a Decillion.


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

Is Decillion the largest number?

Decillion 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.

Decillion written out

Decillion is written out as:


Big Numbers

This is just one of many really big numbers!

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