20597864937 has 16 divisors (see below), whose sum is σ = 30061284288. Its totient is φ = 12467810880.

The previous prime is 20597864927. The next prime is 20597864953. The reversal of 20597864937 is 73946879502.

It is not a de Polignac number, because 20597864937 - 2⁸ = 20597864681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20597864927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4326723 + ... + 4331480.

It is an arithmetic number, because the mean of its divisors is an integer number (1878830268).

Almost surely, 2^20597864937 is an apocalyptic number.

It is an amenable number.

20597864937 is a deficient number, since it is larger than the sum of its proper divisors (9463419351).

20597864937 is a wasteful number, since it uses less digits than its factorization.

20597864937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8658280.

The product of its (nonzero) digits is 22861440, while the sum is 60.

The spelling of 20597864937 in words is "twenty billion, five hundred ninety-seven million, eight hundred sixty-four thousand, nine hundred thirty-seven".