56746808357 has 4 divisors (see below), whose sum is σ = 56832658956. Its totient is φ = 56660957760.

The previous prime is 56746808353. The next prime is 56746808383. The reversal of 56746808357 is 75380864765.

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 33561873601 + 23184934756 = 183199^2 + 152266^2 .

It is a cyclic number.

It is not a de Polignac number, because 56746808357 - 2² = 56746808353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56746808296 and 56746808305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56746808353) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 42924308 + ... + 42925629.

It is an arithmetic number, because the mean of its divisors is an integer number (14208164739).

Almost surely, 2^56746808357 is an apocalyptic number.

It is an amenable number.

56746808357 is a deficient number, since it is larger than the sum of its proper divisors (85850599).

56746808357 is an equidigital number, since it uses as much as digits as its factorization.

56746808357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85850598.

The product of its (nonzero) digits is 33868800, while the sum is 59.

The spelling of 56746808357 in words is "fifty-six billion, seven hundred forty-six million, eight hundred eight thousand, three hundred fifty-seven".