56655255665 has 16 divisors (see below), whose sum is σ = 68932174080. Its totient is φ = 44695048320.

The previous prime is 56655255619. The next prime is 56655255691.

56655255665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56655255665 - 2¹⁰ = 56655254641 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56655255665.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231917 + ... + 408773.

It is an arithmetic number, because the mean of its divisors is an integer number (4308260880).

Almost surely, 2^56655255665 is an apocalyptic number.

It is an amenable number.

56655255665 is a deficient number, since it is larger than the sum of its proper divisors (12276918415).

56655255665 is a wasteful number, since it uses less digits than its factorization.

56655255665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177752.

The product of its digits is 40500000, while the sum is 56.

The spelling of 56655255665 in words is "fifty-six billion, six hundred fifty-five million, two hundred fifty-five thousand, six hundred sixty-five".