23640163524 has 24 divisors (see below), whose sum is σ = 61289313120. Its totient is φ = 7880054472.

The previous prime is 23640163523. The next prime is 23640163549. The reversal of 23640163524 is 42536104632.

23640163524 is a `hidden beast` number, since 2 + 3 + 640 + 1 + 6 + 3 + 5 + 2 + 4 = 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 (23640163523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109445094 + ... + 109445309.

It is an arithmetic number, because the mean of its divisors is an integer number (2553721380).

Almost surely, 2^23640163524 is an apocalyptic number.

It is an amenable number.

23640163524 is an abundant number, since it is smaller than the sum of its proper divisors (37649149596).

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

23640163524 is a wasteful number, since it uses less digits than its factorization.

23640163524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218890416 (or 218890408 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

It can be divided in two parts, 236401 and 63524, that added together give a triangular number (299925 = T₇₇₄).

The spelling of 23640163524 in words is "twenty-three billion, six hundred forty million, one hundred sixty-three thousand, five hundred twenty-four".