15724988488 has 64 divisors (see below), whose sum is σ = 32916974400. Its totient is φ = 6981761280.

The previous prime is 15724988471. The next prime is 15724988533. The reversal of 15724988488 is 88488942751.

It is a super-2 number, since 2×15724988488² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1060695 + ... + 1075417.

It is an arithmetic number, because the mean of its divisors is an integer number (514327725).

Almost surely, 2^15724988488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15724988488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16458487200).

15724988488 is an abundant number, since it is smaller than the sum of its proper divisors (17191985912).

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

15724988488 is a wasteful number, since it uses less digits than its factorization.

15724988488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15022 (or 15018 counting only the distinct ones).

The product of its digits is 41287680, while the sum is 64.

The spelling of 15724988488 in words is "fifteen billion, seven hundred twenty-four million, nine hundred eighty-eight thousand, four hundred eighty-eight".