57286811661020 has 24 divisors (see below), whose sum is σ = 126634004725200. Its totient is φ = 21708686524032.

The previous prime is 57286811660929. The next prime is 57286811661047. The reversal of 57286811661020 is 2016611868275.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75377383385 + ... + 75377384144.

It is an arithmetic number, because the mean of its divisors is an integer number (5276416863550).

Almost surely, 2^{57286811661020} is an apocalyptic number.

It is an amenable number.

57286811661020 is an abundant number, since it is smaller than the sum of its proper divisors (69347193064180).

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

57286811661020 is a wasteful number, since it uses less digits than its factorization.

57286811661020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150754767557 (or 150754767555 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 53.

The spelling of 57286811661020 in words is "fifty-seven trillion, two hundred eighty-six billion, eight hundred eleven million, six hundred sixty-one thousand, twenty".