How to express $2$ power $64$ ?

Representation of exponents

The power of a number indicates the number of times it must be multiplied. It is written in the form $a^b$. Where $b$ indicates the number of times $a$ needs to be multiplied to get the result.

Here

1. $a$ is called the base
2. $b$ is called the exponent

In $2$ power $64$,

Base is $2$, exponent is $64$.

$2$ power $64$$=2^{64}$

Hence, $2$ power $64$ is expressed as as $2^{64}$.