12459073644 has 42 divisors (see below), whose sum is σ = 32690121660. Its totient is φ = 4153023576.

The previous prime is 12459073639. The next prime is 12459073667. The reversal of 12459073644 is 44637095421.

12459073644 is a `hidden beast` number, since 1 + 24 + 590 + 7 + 36 + 4 + 4 = 666.

12459073644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12459073644.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2133414 + ... + 2139245.

It is an arithmetic number, because the mean of its divisors is an integer number (778336230).

Almost surely, 2^12459073644 is an apocalyptic number.

It is an amenable number.

12459073644 is an abundant number, since it is smaller than the sum of its proper divisors (20231048016).

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

12459073644 is an equidigital number, since it uses as much as digits as its factorization.

12459073644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272681 (or 4272664 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 12459073644 in words is "twelve billion, four hundred fifty-nine million, seventy-three thousand, six hundred forty-four".