57166727172 has 12 divisors (see below), whose sum is σ = 133389030096. Its totient is φ = 19055575720.

The previous prime is 57166727159. The next prime is 57166727221. The reversal of 57166727172 is 27172766175.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2381946954 + ... + 2381946977.

It is an arithmetic number, because the mean of its divisors is an integer number (11115752508).

Almost surely, 2^57166727172 is an apocalyptic number.

It is an amenable number.

57166727172 is an abundant number, since it is smaller than the sum of its proper divisors (76222302924).

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

57166727172 is a wasteful number, since it uses less digits than its factorization.

57166727172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763893938 (or 4763893936 counting only the distinct ones).

The product of its digits is 1728720, while the sum is 51.

The spelling of 57166727172 in words is "fifty-seven billion, one hundred sixty-six million, seven hundred twenty-seven thousand, one hundred seventy-two".