56556722165 has 8 divisors (see below), whose sum is σ = 67923840600. Its totient is φ = 45208195072.

The previous prime is 56556722141. The next prime is 56556722177. The reversal of 56556722165 is 56122765565.

It can be written as a sum of positive squares in 4 ways, for example, as 10228895044 + 46327827121 = 101138^2 + 215239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56556722165 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4641140 + ... + 4653309.

It is an arithmetic number, because the mean of its divisors is an integer number (8490480075).

Almost surely, 2^56556722165 is an apocalyptic number.

It is an amenable number.

56556722165 is a deficient number, since it is larger than the sum of its proper divisors (11367118435).

56556722165 is a wasteful number, since it uses less digits than its factorization.

56556722165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9295671.

The product of its digits is 3780000, while the sum is 50.

The spelling of 56556722165 in words is "fifty-six billion, five hundred fifty-six million, seven hundred twenty-two thousand, one hundred sixty-five".