15902323122 has 64 divisors (see below), whose sum is σ = 36966979584. Its totient is φ = 4466542080.

The previous prime is 15902323109. The next prime is 15902323133. The reversal of 15902323122 is 22132320951.

It is a self number, because there is not a number n which added to its sum of digits gives 15902323122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1045093 + ... + 1060199.

It is an arithmetic number, because the mean of its divisors is an integer number (577609056).

Almost surely, 2^15902323122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15902323122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18483489792).

15902323122 is an abundant number, since it is smaller than the sum of its proper divisors (21064656462).

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

15902323122 is a wasteful number, since it uses less digits than its factorization.

15902323122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15543.

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 15902323122 in words is "fifteen billion, nine hundred two million, three hundred twenty-three thousand, one hundred twenty-two".