56657573705 has 8 divisors (see below), whose sum is σ = 67990381512. Its totient is φ = 45325196928.

The previous prime is 56657573671. The next prime is 56657573711. The reversal of 56657573705 is 50737575665.

It can be written as a sum of positive squares in 4 ways, for example, as 21812631481 + 34844942224 = 147691^2 + 186668^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 56657573705 - 2⁸ = 56657573449 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392927 + ... + 517403.

It is an arithmetic number, because the mean of its divisors is an integer number (8498797689).

Almost surely, 2^56657573705 is an apocalyptic number.

It is an amenable number.

56657573705 is a deficient number, since it is larger than the sum of its proper divisors (11332807807).

56657573705 is a wasteful number, since it uses less digits than its factorization.

56657573705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215515.

The product of its (nonzero) digits is 23152500, while the sum is 56.

The spelling of 56657573705 in words is "fifty-six billion, six hundred fifty-seven million, five hundred seventy-three thousand, seven hundred five".