56645054665 has 4 divisors (see below), whose sum is σ = 67974065604. Its totient is φ = 45316043728.

The previous prime is 56645054657. The next prime is 56645054717.

56645054665 is nontrivially palindromic in base 10.

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 12078889216 + 44566165449 = 109904^2 + 211107^2 .

It is a cyclic number.

It is not a de Polignac number, because 56645054665 - 2³ = 56645054657 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 5664505462 + ... + 5664505471.

It is an arithmetic number, because the mean of its divisors is an integer number (16993516401).

Almost surely, 2^56645054665 is an apocalyptic number.

It is an amenable number.

56645054665 is a deficient number, since it is larger than the sum of its proper divisors (11329010939).

56645054665 is a wasteful number, since it uses less digits than its factorization.

56645054665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11329010938.

The product of its (nonzero) digits is 12960000, while the sum is 52.

The spelling of 56645054665 in words is "fifty-six billion, six hundred forty-five million, fifty-four thousand, six hundred sixty-five".