23572428165 has 128 divisors (see below), whose sum is σ = 49351680000. Its totient is φ = 10524453120.

The previous prime is 23572428151. The next prime is 23572428203. The reversal of 23572428165 is 56182427532.

23572428165 is a `hidden beast` number, since 23 + 572 + 42 + 8 + 16 + 5 = 666.

It is not a de Polignac number, because 23572428165 - 2⁶ = 23572428101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 23572428165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9631972 + ... + 9634418.

It is an arithmetic number, because the mean of its divisors is an integer number (385560000).

Almost surely, 2^23572428165 is an apocalyptic number.

It is an amenable number.

23572428165 is an abundant number, since it is smaller than the sum of its proper divisors (25779251835).

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

23572428165 is a wasteful number, since it uses less digits than its factorization.

23572428165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2984 (or 2978 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The spelling of 23572428165 in words is "twenty-three billion, five hundred seventy-two million, four hundred twenty-eight thousand, one hundred sixty-five".