57122772420 has 48 divisors (see below), whose sum is σ = 182792873088. Its totient is φ = 13056633600.

The previous prime is 57122772407. The next prime is 57122772481. The reversal of 57122772420 is 2427722175.

It is a super-2 number, since 2×57122772420² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68002881 + ... + 68003720.

It is an arithmetic number, because the mean of its divisors is an integer number (3808184856).

Almost surely, 2^57122772420 is an apocalyptic number.

It is an amenable number.

57122772420 is an abundant number, since it is smaller than the sum of its proper divisors (125670100668).

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

57122772420 is a wasteful number, since it uses less digits than its factorization.

57122772420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136006620 (or 136006618 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 39.

The spelling of 57122772420 in words is "fifty-seven billion, one hundred twenty-two million, seven hundred seventy-two thousand, four hundred twenty".