57991949880 has 64 divisors (see below), whose sum is σ = 175601831040. Its totient is φ = 15319988352.

The previous prime is 57991949863. The next prime is 57991949887. The reversal of 57991949880 is 8894919975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57991949887) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2245414 + ... + 2271093.

It is an arithmetic number, because the mean of its divisors is an integer number (2743778610).

Almost surely, 2^57991949880 is an apocalyptic number.

It is an amenable number.

57991949880 is an abundant number, since it is smaller than the sum of its proper divisors (117609881160).

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

57991949880 is a wasteful number, since it uses less digits than its factorization.

57991949880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4516628 (or 4516624 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 69.

The spelling of 57991949880 in words is "fifty-seven billion, nine hundred ninety-one million, nine hundred forty-nine thousand, eight hundred eighty".