57815489020782 has 64 divisors (see below), whose sum is σ = 121934124103680. Its totient is φ = 18224932201056.

The previous prime is 57815489020733. The next prime is 57815489020811. The reversal of 57815489020782 is 28702098451875.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1056407103 + ... + 1056461829.

It is an arithmetic number, because the mean of its divisors is an integer number (1905220689120).

Almost surely, 2^{57815489020782} is an apocalyptic number.

57815489020782 is an abundant number, since it is smaller than the sum of its proper divisors (64118635082898).

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

57815489020782 is a wasteful number, since it uses less digits than its factorization.

57815489020782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71125.

The product of its (nonzero) digits is 90316800, while the sum is 66.

The spelling of 57815489020782 in words is "fifty-seven trillion, eight hundred fifteen billion, four hundred eighty-nine million, twenty thousand, seven hundred eighty-two".