38117434872 has 64 divisors (see below), whose sum is σ = 103976784000. Its totient is φ = 11548499840.

The previous prime is 38117434843. The next prime is 38117434897. The reversal of 38117434872 is 27843471183.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1791754 + ... + 1812902.

It is an arithmetic number, because the mean of its divisors is an integer number (1624637250).

Almost surely, 2^38117434872 is an apocalyptic number.

It is an amenable number.

38117434872 is an abundant number, since it is smaller than the sum of its proper divisors (65859349128).

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

38117434872 is a wasteful number, since it uses less digits than its factorization.

38117434872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27996 (or 27992 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The spelling of 38117434872 in words is "thirty-eight billion, one hundred seventeen million, four hundred thirty-four thousand, eight hundred seventy-two".