23440640364 has 36 divisors (see below), whose sum is σ = 59268251224. Its totient is φ = 7811500032.

The previous prime is 23440640339. The next prime is 23440640401. The reversal of 23440640364 is 46304604432.

23440640364 is a `hidden beast` number, since 2 + 3 + 4 + 4 + 0 + 640 + 3 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 57324 + ... + 223980.

Almost surely, 2^23440640364 is an apocalyptic number.

It is an amenable number.

23440640364 is an abundant number, since it is smaller than the sum of its proper divisors (35827610860).

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

23440640364 is a wasteful number, since it uses less digits than its factorization.

23440640364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170574 (or 170569 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

The spelling of 23440640364 in words is "twenty-three billion, four hundred forty million, six hundred forty thousand, three hundred sixty-four".