57249764840 has 32 divisors (see below), whose sum is σ = 131807602080. Its totient is φ = 22367349312.

The previous prime is 57249764837. The next prime is 57249764857. The reversal of 57249764840 is 4846794275.

It is a happy number.

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16640654 + ... + 16644093.

It is an arithmetic number, because the mean of its divisors is an integer number (4118987565).

Almost surely, 2^57249764840 is an apocalyptic number.

It is an amenable number.

57249764840 is an abundant number, since it is smaller than the sum of its proper divisors (74557837240).

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

57249764840 is a wasteful number, since it uses less digits than its factorization.

57249764840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33284801 (or 33284797 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 57249764840 in words is "fifty-seven billion, two hundred forty-nine million, seven hundred sixty-four thousand, eight hundred forty".