9621697256157 has 32 divisors (see below), whose sum is σ = 14961333024000. Its totient is φ = 5497935550464.

The previous prime is 9621697256137. The next prime is 9621697256179. The reversal of 9621697256157 is 7516527961269.

9621697256157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9621697256157 - 2¹⁰ = 9621697255133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9621697256137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36014653 + ... + 36280829.

It is an arithmetic number, because the mean of its divisors is an integer number (467541657000).

Almost surely, 2^{9621697256157} is an apocalyptic number.

It is an amenable number.

9621697256157 is a deficient number, since it is larger than the sum of its proper divisors (5339635767843).

9621697256157 is a wasteful number, since it uses less digits than its factorization.

9621697256157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301330 (or 301316 counting only the distinct ones).

The product of its digits is 85730400, while the sum is 66.

The spelling of 9621697256157 in words is "nine trillion, six hundred twenty-one billion, six hundred ninety-seven million, two hundred fifty-six thousand, one hundred fifty-seven".