12344159905 has 32 divisors (see below), whose sum is σ = 18651057408. Its totient is φ = 7618848000.

The previous prime is 12344159903. The next prime is 12344159953. The reversal of 12344159905 is 50995144321.

It is not a de Polignac number, because 12344159905 - 2¹ = 12344159903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12344159903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119842 + ... + 197611.

It is an arithmetic number, because the mean of its divisors is an integer number (582845544).

Almost surely, 2^12344159905 is an apocalyptic number.

It is an amenable number.

12344159905 is a deficient number, since it is larger than the sum of its proper divisors (6306897503).

12344159905 is a wasteful number, since it uses less digits than its factorization.

12344159905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317577.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 12344159905 in words is "twelve billion, three hundred forty-four million, one hundred fifty-nine thousand, nine hundred five".