57122772428 has 36 divisors (see below), whose sum is σ = 106805231232. Its totient is φ = 26725827840.

The previous prime is 57122772407. The next prime is 57122772481. The reversal of 57122772428 is 82427722175.

It is a super-2 number, since 2×57122772428² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57173 + ... + 342803.

Almost surely, 2^57122772428 is an apocalyptic number.

It is an amenable number.

57122772428 is a deficient number, since it is larger than the sum of its proper divisors (49682458804).

57122772428 is a wasteful number, since it uses less digits than its factorization.

57122772428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285842 (or 285823 counting only the distinct ones).

The product of its digits is 878080, while the sum is 47.

The spelling of 57122772428 in words is "fifty-seven billion, one hundred twenty-two million, seven hundred seventy-two thousand, four hundred twenty-eight".