38681664592 has 60 divisors (see below), whose sum is σ = 80809068960. Its totient is φ = 17902991040.

The previous prime is 38681664521. The next prime is 38681664607. The reversal of 38681664592 is 29546618683.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 298959 + ... + 408337.

It is an arithmetic number, because the mean of its divisors is an integer number (1346817816).

Almost surely, 2^38681664592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38681664592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40404534480).

38681664592 is an abundant number, since it is smaller than the sum of its proper divisors (42127404368).

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

38681664592 is a wasteful number, since it uses less digits than its factorization.

38681664592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109472 (or 109435 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 58.

The spelling of 38681664592 in words is "thirty-eight billion, six hundred eighty-one million, six hundred sixty-four thousand, five hundred ninety-two".