15928789113 has 12 divisors (see below), whose sum is σ = 23030198100. Its totient is φ = 10609063296.

The previous prime is 15928789109. The next prime is 15928789141. The reversal of 15928789113 is 31198782951.

It can be written as a sum of positive squares in 2 ways, for example, as 9824179689 + 6104609424 = 99117^2 + 78132^2 .

It is not a de Polignac number, because 15928789113 - 2² = 15928789109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15928789113.

It is not an unprimeable number, because it can be changed into a prime (15928789193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 834156 + ... + 853037.

It is an arithmetic number, because the mean of its divisors is an integer number (1919183175).

Almost surely, 2^15928789113 is an apocalyptic number.

It is an amenable number.

15928789113 is a deficient number, since it is larger than the sum of its proper divisors (7101408987).

15928789113 is a wasteful number, since it uses less digits than its factorization.

15928789113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688248 (or 1688245 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 54.

The spelling of 15928789113 in words is "fifteen billion, nine hundred twenty-eight million, seven hundred eighty-nine thousand, one hundred thirteen".