15898728816 has 160 divisors (see below), whose sum is σ = 46180377600. Its totient is φ = 5236669440.

The previous prime is 15898728809. The next prime is 15898728847. The reversal of 15898728816 is 61882789851.

It is a Smith number, since the sum of its digits (63) 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 31 ways as a sum of consecutive naturals, for example, 16272520 + ... + 16273496.

It is an arithmetic number, because the mean of its divisors is an integer number (288627360).

Almost surely, 2^15898728816 is an apocalyptic number.

15898728816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15898728816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23090188800).

15898728816 is an abundant number, since it is smaller than the sum of its proper divisors (30281648784).

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

15898728816 is a wasteful number, since it uses less digits than its factorization.

15898728816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404 (or 1392 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 63.

The spelling of 15898728816 in words is "fifteen billion, eight hundred ninety-eight million, seven hundred twenty-eight thousand, eight hundred sixteen".