57272721020 has 24 divisors (see below), whose sum is σ = 120279751200. Its totient is φ = 22907748032.

The previous prime is 57272721019. The next prime is 57272721049. The reversal of 57272721020 is 2012727275.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312266 + ... + 460494.

It is an arithmetic number, because the mean of its divisors is an integer number (5011656300).

Almost surely, 2^57272721020 is an apocalyptic number.

It is an amenable number.

57272721020 is an abundant number, since it is smaller than the sum of its proper divisors (63007030180).

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

57272721020 is a wasteful number, since it uses less digits than its factorization.

57272721020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167557 (or 167555 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 35.

The spelling of 57272721020 in words is "fifty-seven billion, two hundred seventy-two million, seven hundred twenty-one thousand, twenty".