23439904516972 has 24 divisors (see below), whose sum is σ = 41422571893584. Its totient is φ = 11604986495232.

The previous prime is 23439904516933. The next prime is 23439904517009. The reversal of 23439904516972 is 27961540993432.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11899153 + ... + 13728424.

It is an arithmetic number, because the mean of its divisors is an integer number (1725940495566).

Almost surely, 2^{23439904516972} is an apocalyptic number.

It is an amenable number.

23439904516972 is a deficient number, since it is larger than the sum of its proper divisors (17982667376612).

23439904516972 is a wasteful number, since it uses less digits than its factorization.

23439904516972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25629825 (or 25629823 counting only the distinct ones).

The product of its (nonzero) digits is 88179840, while the sum is 64.

The spelling of 23439904516972 in words is "twenty-three trillion, four hundred thirty-nine billion, nine hundred four million, five hundred sixteen thousand, nine hundred seventy-two".