57216148772 has 12 divisors (see below), whose sum is σ = 101769707676. Its totient is φ = 28139089440.

The previous prime is 57216148751. The next prime is 57216148799. The reversal of 57216148772 is 27784161275.

It can be written as a sum of positive squares in 2 ways, for example, as 27723582016 + 29492566756 = 166504^2 + 171734^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57216148772.

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, 117245963 + ... + 117246450.

It is an arithmetic number, because the mean of its divisors is an integer number (8480808973).

Almost surely, 2^57216148772 is an apocalyptic number.

It is an amenable number.

57216148772 is a deficient number, since it is larger than the sum of its proper divisors (44553558904).

57216148772 is a wasteful number, since it uses less digits than its factorization.

57216148772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234492478 (or 234492476 counting only the distinct ones).

The product of its digits is 1317120, while the sum is 50.

The spelling of 57216148772 in words is "fifty-seven billion, two hundred sixteen million, one hundred forty-eight thousand, seven hundred seventy-two".