65564131896 has 96 divisors (see below), whose sum is σ = 186973488000. Its totient is φ = 20698016832.

The previous prime is 65564131861. The next prime is 65564131903. The reversal of 65564131896 is 69813146556.

65564131896 is a `hidden beast` number, since 6 + 556 + 4 + 1 + 3 + 1 + 89 + 6 = 666.

65564131896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6395751 + ... + 6405993.

It is an arithmetic number, because the mean of its divisors is an integer number (1947640500).

Almost surely, 2^65564131896 is an apocalyptic number.

It is an amenable number.

65564131896 is an abundant number, since it is smaller than the sum of its proper divisors (121409356104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65564131896 is a wasteful number, since it uses less digits than its factorization.

65564131896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14953 (or 14946 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The spelling of 65564131896 in words is "sixty-five billion, five hundred sixty-four million, one hundred thirty-one thousand, eight hundred ninety-six".