57163313581 has 16 divisors (see below), whose sum is σ = 63193074048. Its totient is φ = 51276052800.

The previous prime is 57163313549. The next prime is 57163313587. The reversal of 57163313581 is 18531336175.

It is a cyclic number.

It is not a de Polignac number, because 57163313581 - 2⁵ = 57163313549 is a prime.

It is a super-2 number, since 2×57163313581² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57163313587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222771 + ... + 404911.

It is an arithmetic number, because the mean of its divisors is an integer number (3949567128).

Almost surely, 2^57163313581 is an apocalyptic number.

It is an amenable number.

57163313581 is a deficient number, since it is larger than the sum of its proper divisors (6029760467).

57163313581 is a wasteful number, since it uses less digits than its factorization.

57163313581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182532.

The product of its digits is 226800, while the sum is 43.

The spelling of 57163313581 in words is "fifty-seven billion, one hundred sixty-three million, three hundred thirteen thousand, five hundred eighty-one".