15917960944 has 40 divisors (see below), whose sum is σ = 31031138880. Its totient is φ = 7910073600.

The previous prime is 15917960899. The next prime is 15917961001. The reversal of 15917960944 is 44906971951.

It is a super-2 number, since 2×15917960944² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

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, 1850734 + ... + 1859314.

It is an arithmetic number, because the mean of its divisors is an integer number (775778472).

Almost surely, 2^15917960944 is an apocalyptic number.

It is an amenable number.

15917960944 is a deficient number, since it is larger than the sum of its proper divisors (15113177936).

15917960944 is a wasteful number, since it uses less digits than its factorization.

15917960944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9289 (or 9283 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 55.

The spelling of 15917960944 in words is "fifteen billion, nine hundred seventeen million, nine hundred sixty thousand, nine hundred forty-four".