57122772636 has 24 divisors (see below), whose sum is σ = 133301857024. Its totient is φ = 19038726000.

The previous prime is 57122772589. The next prime is 57122772643. The reversal of 57122772636 is 63627722175.

It is a super-2 number, since 2×57122772636² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 164740 + ... + 376011.

Almost surely, 2^57122772636 is an apocalyptic number.

It is an amenable number.

57122772636 is an abundant number, since it is smaller than the sum of its proper divisors (76179084388).

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

57122772636 is a wasteful number, since it uses less digits than its factorization.

57122772636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549561 (or 549559 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 48.

The spelling of 57122772636 in words is "fifty-seven billion, one hundred twenty-two million, seven hundred seventy-two thousand, six hundred thirty-six".