56656510523 has 2 divisors, whose sum is σ = 56656510524. Its totient is φ = 56656510522.

The previous prime is 56656510511. The next prime is 56656510577. The reversal of 56656510523 is 32501565665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56656510523 - 2⁴ = 56656510507 is a prime.

It is not a weakly prime, because it can be changed into another prime (56656510423) 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 as a sum of consecutive naturals, namely, 28328255261 + 28328255262.

It is an arithmetic number, because the mean of its divisors is an integer number (28328255262).

Almost surely, 2^56656510523 is an apocalyptic number.

56656510523 is a deficient number, since it is larger than the sum of its proper divisors (1).

56656510523 is an equidigital number, since it uses as much as digits as its factorization.

56656510523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 56656510523 in words is "fifty-six billion, six hundred fifty-six million, five hundred ten thousand, five hundred twenty-three".