56657287373 has 4 divisors (see below), whose sum is σ = 57455277408. Its totient is φ = 55859297340.

The previous prime is 56657287363. The next prime is 56657287391. The reversal of 56657287373 is 37378275665.

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 not a de Polignac number, because 56657287373 - 2¹⁰ = 56657286349 is a prime.

It is a super-2 number, since 2×56657287373² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56657287363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398994911 + ... + 398995052.

It is an arithmetic number, because the mean of its divisors is an integer number (14363819352).

Almost surely, 2^56657287373 is an apocalyptic number.

It is an amenable number.

56657287373 is a deficient number, since it is larger than the sum of its proper divisors (797990035).

56657287373 is an equidigital number, since it uses as much as digits as its factorization.

56657287373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797990034.

The product of its digits is 44452800, while the sum is 59.

The spelling of 56657287373 in words is "fifty-six billion, six hundred fifty-seven million, two hundred eighty-seven thousand, three hundred seventy-three".