57920838681 has 16 divisors (see below), whose sum is σ = 79774281728. Its totient is φ = 37342371600.

The previous prime is 57920838673. The next prime is 57920838683. The reversal of 57920838681 is 18683802975.

It is a happy number.

It is not a de Polignac number, because 57920838681 - 2³ = 57920838673 is a prime.

It is a super-2 number, since 2×57920838681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57920838683) 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, 80635 + ... + 349776.

It is an arithmetic number, because the mean of its divisors is an integer number (4985892608).

Almost surely, 2^57920838681 is an apocalyptic number.

It is an amenable number.

57920838681 is a deficient number, since it is larger than the sum of its proper divisors (21853443047).

57920838681 is a wasteful number, since it uses less digits than its factorization.

57920838681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431892.

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 57920838681 in words is "fifty-seven billion, nine hundred twenty million, eight hundred thirty-eight thousand, six hundred eighty-one".