15002972988 has 12 divisors (see below), whose sum is σ = 35006937000. Its totient is φ = 5000990992.

The previous prime is 15002972981. The next prime is 15002972989. The reversal of 15002972988 is 88927920051.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 15002972988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15002972981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625123863 + ... + 625123886.

It is an arithmetic number, because the mean of its divisors is an integer number (2917244750).

Almost surely, 2^15002972988 is an apocalyptic number.

It is an amenable number.

15002972988 is an abundant number, since it is smaller than the sum of its proper divisors (20003964012).

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

15002972988 is a wasteful number, since it uses less digits than its factorization.

15002972988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250247756 (or 1250247754 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 51.

The spelling of 15002972988 in words is "fifteen billion, two million, nine hundred seventy-two thousand, nine hundred eighty-eight".