23997816816 has 20 divisors (see below), whose sum is σ = 61994360232. Its totient is φ = 7999272256.

The previous prime is 23997816769. The next prime is 23997816827. The reversal of 23997816816 is 61861879932.

It is a self number, because there is not a number n which added to its sum of digits gives 23997816816.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249977211 + ... + 249977306.

Almost surely, 2^23997816816 is an apocalyptic number.

It is an amenable number.

23997816816 is an abundant number, since it is smaller than the sum of its proper divisors (37996543416).

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

23997816816 is a wasteful number, since it uses less digits than its factorization.

23997816816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499954528 (or 499954522 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 60.

The spelling of 23997816816 in words is "twenty-three billion, nine hundred ninety-seven million, eight hundred sixteen thousand, eight hundred sixteen".