38344321872 has 60 divisors (see below), whose sum is σ = 107728501140. Its totient is φ = 12731695104.

The previous prime is 38344321861. The next prime is 38344321903. The reversal of 38344321872 is 27812344383.

38344321872 is a `hidden beast` number, since 3 + 8 + 34 + 432 + 187 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26372460816 + 11971861056 = 162396^2 + 109416^2 .

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, 481047 + ... + 555062.

It is an arithmetic number, because the mean of its divisors is an integer number (1795475019).

Almost surely, 2^38344321872 is an apocalyptic number.

It is an amenable number.

38344321872 is an abundant number, since it is smaller than the sum of its proper divisors (69384179268).

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

38344321872 is a wasteful number, since it uses less digits than its factorization.

38344321872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036380 (or 1036371 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The spelling of 38344321872 in words is "thirty-eight billion, three hundred forty-four million, three hundred twenty-one thousand, eight hundred seventy-two".