23911532656 has 20 divisors (see below), whose sum is σ = 50540285304. Its totient is φ = 10868878400.

The previous prime is 23911532647. The next prime is 23911532657. The reversal of 23911532656 is 65623511932.

It is a super-2 number, since 2×23911532656² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23911532657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67930315 + ... + 67930666.

Almost surely, 2^23911532656 is an apocalyptic number.

It is an amenable number.

23911532656 is an abundant number, since it is smaller than the sum of its proper divisors (26628752648).

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

23911532656 is a wasteful number, since it uses less digits than its factorization.

23911532656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135861000 (or 135860994 counting only the distinct ones).

The product of its digits is 291600, while the sum is 43.

The spelling of 23911532656 in words is "twenty-three billion, nine hundred eleven million, five hundred thirty-two thousand, six hundred fifty-six".