56005650065 has 24 divisors (see below), whose sum is σ = 68995274424. Its totient is φ = 43642368000.

The previous prime is 56005650059. The next prime is 56005650089.

It is a happy number.

56005650065 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 12 ways, for example, as 30156406336 + 25849243729 = 173656^2 + 160777^2 .

It is not a de Polignac number, because 56005650065 - 2²⁰ = 56004601489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5651615 + ... + 5661515.

It is an arithmetic number, because the mean of its divisors is an integer number (2874803101).

Almost surely, 2^56005650065 is an apocalyptic number.

It is an amenable number.

56005650065 is a deficient number, since it is larger than the sum of its proper divisors (12989624359).

56005650065 is an equidigital number, since it uses as much as digits as its factorization.

56005650065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10661 (or 10620 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 38.

The spelling of 56005650065 in words is "fifty-six billion, five million, six hundred fifty thousand, sixty-five".