56604334657657 has 4 divisors (see below), whose sum is σ = 56920559991120. Its totient is φ = 56288109324196.

The previous prime is 56604334657613. The next prime is 56604334657697. The reversal of 56604334657657 is 75675643340665.

It is a happy number.

56604334657657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56604334657657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56604334657592 and 56604334657601.

It is not an unprimeable number, because it can be changed into a prime (56604334657697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158112666463 + ... + 158112666820.

It is an arithmetic number, because the mean of its divisors is an integer number (14230139997780).

Almost surely, 2^{56604334657657} is an apocalyptic number.

It is an amenable number.

56604334657657 is a deficient number, since it is larger than the sum of its proper divisors (316225333463).

56604334657657 is a wasteful number, since it uses less digits than its factorization.

56604334657657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316225333462.

The product of its (nonzero) digits is 1143072000, while the sum is 67.

The spelling of 56604334657657 in words is "fifty-six trillion, six hundred four billion, three hundred thirty-four million, six hundred fifty-seven thousand, six hundred fifty-seven".