56397591705 has 64 divisors (see below), whose sum is σ = 111147499008. Its totient is φ = 23779768320.

The previous prime is 56397591671. The next prime is 56397591709. The reversal of 56397591705 is 50719579365.

56397591705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56397591705 - 2⁸ = 56397591449 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56397591709) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1787527 + ... + 1818803.

It is an arithmetic number, because the mean of its divisors is an integer number (1736679672).

Almost surely, 2^56397591705 is an apocalyptic number.

It is an amenable number.

56397591705 is a deficient number, since it is larger than the sum of its proper divisors (54749907303).

56397591705 is a wasteful number, since it uses less digits than its factorization.

56397591705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32626.

The product of its (nonzero) digits is 8930250, while the sum is 57.

The spelling of 56397591705 in words is "fifty-six billion, three hundred ninety-seven million, five hundred ninety-one thousand, seven hundred five".