23515051504 has 20 divisors (see below), whose sum is σ = 52069042864. Its totient is φ = 10077879168.

The previous prime is 23515051487. The next prime is 23515051517. The reversal of 23515051504 is 40515051532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104977797 + ... + 104978020.

Almost surely, 2^23515051504 is an apocalyptic number.

It is an amenable number.

23515051504 is an abundant number, since it is smaller than the sum of its proper divisors (28553991360).

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

23515051504 is a wasteful number, since it uses less digits than its factorization.

23515051504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209955832 (or 209955826 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 23515051504 in words is "twenty-three billion, five hundred fifteen million, fifty-one thousand, five hundred four".