12944539013904 has 135 divisors (see below), whose sum is σ = 36929678736223. Its totient is φ = 4232685789696.

The previous prime is 12944539013899. The next prime is 12944539013911. The reversal of 12944539013904 is 40931093544921.

The square root of 12944539013904 is 3597852.

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

12944539013904 is a `hidden beast` number, since 1 + 2 + 9 + 4 + 4 + 539 + 0 + 13 + 90 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 705176703504 + 12239362310400 = 839748^2 + 3498480^2 .

It is a super-2 number, since 2×12944539013904² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2288231044 + ... + 2288236700.

Almost surely, 2^{12944539013904} is an apocalyptic number.

12944539013904 is the 3597852-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12944539013904

12944539013904 is an abundant number, since it is smaller than the sum of its proper divisors (23985139722319).

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

12944539013904 is an frugal number, since it uses more digits than its factorization.

12944539013904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11434 (or 5715 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 12944539013904 in words is "twelve trillion, nine hundred forty-four billion, five hundred thirty-nine million, thirteen thousand, nine hundred four".