23649390864 has 60 divisors (see below), whose sum is σ = 72202311792. Its totient is φ = 7166481600.

The previous prime is 23649390859. The next prime is 23649390881. The reversal of 23649390864 is 46809394632.

23649390864 is a `hidden beast` number, since 2 + 3 + 6 + 493 + 90 + 8 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 23649390864.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7463502 + ... + 7466669.

Almost surely, 2^23649390864 is an apocalyptic number.

23649390864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23649390864 is an abundant number, since it is smaller than the sum of its proper divisors (48552920928).

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

23649390864 is a wasteful number, since it uses less digits than its factorization.

23649390864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14930196 (or 14930187 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 54.

The spelling of 23649390864 in words is "twenty-three billion, six hundred forty-nine million, three hundred ninety thousand, eight hundred sixty-four".