12444391117 has 4 divisors (see below), whose sum is σ = 12456099040. Its totient is φ = 12432683196.

The previous prime is 12444391079. The next prime is 12444391121. The reversal of 12444391117 is 71119344421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71119344421 = 223 ⋅318920827.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12444391117 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 (12444391177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5852367 + ... + 5854492.

It is an arithmetic number, because the mean of its divisors is an integer number (3114024760).

Almost surely, 2^12444391117 is an apocalyptic number.

It is an amenable number.

12444391117 is a deficient number, since it is larger than the sum of its proper divisors (11707923).

12444391117 is a wasteful number, since it uses less digits than its factorization.

12444391117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11707922.

The product of its digits is 24192, while the sum is 37.

The spelling of 12444391117 in words is "twelve billion, four hundred forty-four million, three hundred ninety-one thousand, one hundred seventeen".