12515344384 has 153 divisors (see below), whose sum is σ = 27615742203. Its totient is φ = 5670567936.

The previous prime is 12515344339. The next prime is 12515344417. The reversal of 12515344384 is 48344351521.

The square root of 12515344384 is 111872.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 544145397 + ... + 544145419.

Almost surely, 2^12515344384 is an apocalyptic number.

12515344384 is the 111872-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12515344384

12515344384 is an abundant number, since it is smaller than the sum of its proper divisors (15100397819).

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

12515344384 is an frugal number, since it uses more digits than its factorization.

12515344384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 44 counting only the distinct ones).

The product of its digits is 230400, while the sum is 40.

The spelling of 12515344384 in words is "twelve billion, five hundred fifteen million, three hundred forty-four thousand, three hundred eighty-four".