15159391968 has 48 divisors (see below), whose sum is σ = 45478177920. Its totient is φ = 4331254656.

The previous prime is 15159391921. The next prime is 15159391981. The reversal of 15159391968 is 86919395151.

It is a tau number, because it is divible by the number of its divisors (48).

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, 11278638 + ... + 11279981.

It is an arithmetic number, because the mean of its divisors is an integer number (947462040).

Almost surely, 2^15159391968 is an apocalyptic number.

It is an amenable number.

15159391968 is an abundant number, since it is smaller than the sum of its proper divisors (30318785952).

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

15159391968 is a wasteful number, since it uses less digits than its factorization.

15159391968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22558639 (or 22558631 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 57.

The spelling of 15159391968 in words is "fifteen billion, one hundred fifty-nine million, three hundred ninety-one thousand, nine hundred sixty-eight".