56561406705 has 64 divisors (see below), whose sum is σ = 103748601600. Its totient is φ = 29218199040.

The previous prime is 56561406697. The next prime is 56561406739. The reversal of 56561406705 is 50760416565.

56561406705 is a `hidden beast` number, since 565 + 6 + 14 + 0 + 6 + 70 + 5 = 666.

56561406705 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 56561406705 - 2³ = 56561406697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 732607 + ... + 806123.

It is an arithmetic number, because the mean of its divisors is an integer number (1621071900).

Almost surely, 2^56561406705 is an apocalyptic number.

It is an amenable number.

56561406705 is a deficient number, since it is larger than the sum of its proper divisors (47187194895).

56561406705 is a wasteful number, since it uses less digits than its factorization.

56561406705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73711 (or 73705 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 56561406705 in words is "fifty-six billion, five hundred sixty-one million, four hundred six thousand, seven hundred five".