56086516565 has 4 divisors (see below), whose sum is σ = 67303819884. Its totient is φ = 44869213248.

The previous prime is 56086516511. The next prime is 56086516573. The reversal of 56086516565 is 56561568065.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31407991729 + 24678524836 = 177223^2 + 157094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56086516565 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5608651652 + ... + 5608651661.

It is an arithmetic number, because the mean of its divisors is an integer number (16825954971).

Almost surely, 2^56086516565 is an apocalyptic number.

It is an amenable number.

56086516565 is a deficient number, since it is larger than the sum of its proper divisors (11217303319).

56086516565 is a wasteful number, since it uses less digits than its factorization.

56086516565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11217303318.

The product of its (nonzero) digits is 6480000, while the sum is 53.

The spelling of 56086516565 in words is "fifty-six billion, eighty-six million, five hundred sixteen thousand, five hundred sixty-five".