56657543852 has 24 divisors (see below), whose sum is σ = 122031633696. Its totient is φ = 22413973248.

The previous prime is 56657543851. The next prime is 56657543893. The reversal of 56657543852 is 25834575665.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (56657543851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77825933 + ... + 77826660.

It is an arithmetic number, because the mean of its divisors is an integer number (5084651404).

Almost surely, 2^56657543852 is an apocalyptic number.

56657543852 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

56657543852 is an abundant number, since it is smaller than the sum of its proper divisors (65374089844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56657543852 is a wasteful number, since it uses less digits than its factorization.

56657543852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155652617 (or 155652615 counting only the distinct ones).

The product of its digits is 30240000, while the sum is 56.

The spelling of 56657543852 in words is "fifty-six billion, six hundred fifty-seven million, five hundred forty-three thousand, eight hundred fifty-two".