56511051705 has 20 divisors (see below), whose sum is σ = 101301293412. Its totient is φ = 30139227360.

The previous prime is 56511051691. The next prime is 56511051733. The reversal of 56511051705 is 50715011565.

It is a happy number.

56511051705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 20640206889 + 35870844816 = 143667^2 + 189396^2 .

It is not a de Polignac number, because 56511051705 - 2⁴ = 56511051689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56511051705.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 69766326 + ... + 69767135.

Almost surely, 2^56511051705 is an apocalyptic number.

It is an amenable number.

56511051705 is a deficient number, since it is larger than the sum of its proper divisors (44790241707).

56511051705 is a wasteful number, since it uses less digits than its factorization.

56511051705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139533478 (or 139533469 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 36.

The spelling of 56511051705 in words is "fifty-six billion, five hundred eleven million, fifty-one thousand, seven hundred five".