38057986681 has 16 divisors (see below), whose sum is σ = 45444466368. Its totient is φ = 31413211200.

The previous prime is 38057986609. The next prime is 38057986699. The reversal of 38057986681 is 18668975083.

It is a cyclic number.

It is not a de Polignac number, because 38057986681 - 2²⁵ = 38024432249 is a prime.

It is a super-2 number, since 2×38057986681² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38057956681) 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, 2172751 + ... + 2190196.

It is an arithmetic number, because the mean of its divisors is an integer number (2840279148).

Almost surely, 2^38057986681 is an apocalyptic number.

It is an amenable number.

38057986681 is a deficient number, since it is larger than the sum of its proper divisors (7386479687).

38057986681 is a wasteful number, since it uses less digits than its factorization.

38057986681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4363032.

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 38057986681 in words is "thirty-eight billion, fifty-seven million, nine hundred eighty-six thousand, six hundred eighty-one".