56640313412 has 6 divisors (see below), whose sum is σ = 99120548478. Its totient is φ = 28320156704.

The previous prime is 56640313381. The next prime is 56640313421. The reversal of 56640313412 is 21431304665.

It can be written as a sum of positive squares in only one way, i.e., 56446157056 + 194156356 = 237584^2 + 13934^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7080039173 + ... + 7080039180.

It is an arithmetic number, because the mean of its divisors is an integer number (16520091413).

Almost surely, 2^56640313412 is an apocalyptic number.

It is an amenable number.

56640313412 is a deficient number, since it is larger than the sum of its proper divisors (42480235066).

56640313412 is a wasteful number, since it uses less digits than its factorization.

56640313412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14160078357 (or 14160078355 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 56640313412 in words is "fifty-six billion, six hundred forty million, three hundred thirteen thousand, four hundred twelve".