12604144439 has 4 divisors (see below), whose sum is σ = 12605129424. Its totient is φ = 12603159456.

The previous prime is 12604144429. The next prime is 12604144447. The reversal of 12604144439 is 93444140621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12604144439 - 2⁸ = 12604144183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12604144429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473042 + ... + 498975.

It is an arithmetic number, because the mean of its divisors is an integer number (3151282356).

Almost surely, 2^12604144439 is an apocalyptic number.

12604144439 is a deficient number, since it is larger than the sum of its proper divisors (984985).

12604144439 is an equidigital number, since it uses as much as digits as its factorization.

12604144439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984984.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 12604144439 in words is "twelve billion, six hundred four million, one hundred forty-four thousand, four hundred thirty-nine".