23256643624 has 8 divisors (see below), whose sum is σ = 43606206810. Its totient is φ = 11628321808.

The previous prime is 23256643609. The next prime is 23256643639. The reversal of 23256643624 is 42634665232.

It is an interprime number because it is at equal distance from previous prime (23256643609) and next prime (23256643639).

It can be written as a sum of positive squares in only one way, i.e., 22737624100 + 519019524 = 150790^2 + 22782^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1453540219 + ... + 1453540234.

Almost surely, 2^23256643624 is an apocalyptic number.

It is an amenable number.

23256643624 is a deficient number, since it is larger than the sum of its proper divisors (20349563186).

23256643624 is a wasteful number, since it uses less digits than its factorization.

23256643624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907080459 (or 2907080455 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 43.

The spelling of 23256643624 in words is "twenty-three billion, two hundred fifty-six million, six hundred forty-three thousand, six hundred twenty-four".