23256520452 has 72 divisors (see below), whose sum is σ = 64151811360. Its totient is φ = 7045211520.

The previous prime is 23256520439. The next prime is 23256520453. The reversal of 23256520452 is 25402565232.

23256520452 is a `hidden beast` number, since 2 + 32 + 56 + 520 + 4 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (23256520453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1605699 + ... + 1620117.

It is an arithmetic number, because the mean of its divisors is an integer number (890997380).

Almost surely, 2^23256520452 is an apocalyptic number.

23256520452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23256520452 is an abundant number, since it is smaller than the sum of its proper divisors (40895290908).

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

23256520452 is a wasteful number, since it uses less digits than its factorization.

23256520452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18513 (or 18508 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 23256520452 in words is "twenty-three billion, two hundred fifty-six million, five hundred twenty thousand, four hundred fifty-two".