15799973944 has 32 divisors (see below), whose sum is σ = 33018526800. Its totient is φ = 7043950080.

The previous prime is 15799973929. The next prime is 15799974019. The reversal of 15799973944 is 44937999751.

It is a self number, because there is not a number n which added to its sum of digits gives 15799973944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3054687 + ... + 3059854.

Almost surely, 2^15799973944 is an apocalyptic number.

It is an amenable number.

15799973944 is an abundant number, since it is smaller than the sum of its proper divisors (17218552856).

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

15799973944 is a wasteful number, since it uses less digits than its factorization.

15799973944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6114583 (or 6114579 counting only the distinct ones).

The product of its digits is 77157360, while the sum is 67.

The spelling of 15799973944 in words is "fifteen billion, seven hundred ninety-nine million, nine hundred seventy-three thousand, nine hundred forty-four".