57162811881 has 16 divisors (see below), whose sum is σ = 90892422144. Its totient is φ = 31244269584.

The previous prime is 57162811859. The next prime is 57162811907. The reversal of 57162811881 is 18811826175.

It is a happy number.

It is not a de Polignac number, because 57162811881 - 2¹⁰ = 57162810857 is a prime.

It is a super-2 number, since 2×57162811881² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57162811881.

It is not an unprimeable number, because it can be changed into a prime (57162811681) 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, 59174271 + ... + 59175236.

It is an arithmetic number, because the mean of its divisors is an integer number (5680776384).

Almost surely, 2^57162811881 is an apocalyptic number.

It is an amenable number.

57162811881 is a deficient number, since it is larger than the sum of its proper divisors (33729610263).

57162811881 is a wasteful number, since it uses less digits than its factorization.

57162811881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118349540.

The product of its digits is 215040, while the sum is 48.

The spelling of 57162811881 in words is "fifty-seven billion, one hundred sixty-two million, eight hundred eleven thousand, eight hundred eighty-one".