56640432336 has 40 divisors (see below), whose sum is σ = 146619184224. Its totient is φ = 18841683840.

The previous prime is 56640432323. The next prime is 56640432383. The reversal of 56640432336 is 63323404665.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1178071 + ... + 1225206.

Almost surely, 2^56640432336 is an apocalyptic number.

It is an amenable number.

56640432336 is an abundant number, since it is smaller than the sum of its proper divisors (89978751888).

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

56640432336 is a wasteful number, since it uses less digits than its factorization.

56640432336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403779 (or 2403773 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 42.

The spelling of 56640432336 in words is "fifty-six billion, six hundred forty million, four hundred thirty-two thousand, three hundred thirty-six".