12660744384 has 84 divisors (see below), whose sum is σ = 36490534080. Its totient is φ = 4196897280.

The previous prime is 12660744377. The next prime is 12660744391. The reversal of 12660744384 is 48344706621.

12660744384 is a `hidden beast` number, since 1 + 2 + 6 + 607 + 4 + 4 + 38 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (12660744377) and next prime (12660744391).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43537 + ... + 164975.

It is an arithmetic number, because the mean of its divisors is an integer number (434411120).

Almost surely, 2^12660744384 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 12660744384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18245267040).

12660744384 is an abundant number, since it is smaller than the sum of its proper divisors (23829789696).

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

12660744384 is a wasteful number, since it uses less digits than its factorization.

12660744384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121638 (or 121625 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 12660744384 in words is "twelve billion, six hundred sixty million, seven hundred forty-four thousand, three hundred eighty-four".