12431812565 has 16 divisors (see below), whose sum is σ = 14953566720. Its totient is φ = 9921890880.

The previous prime is 12431812531. The next prime is 12431812567. The reversal of 12431812565 is 56521813421.

It is not a de Polignac number, because 12431812565 - 2¹⁸ = 12431550421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431812567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5295722 + ... + 5298068.

It is an arithmetic number, because the mean of its divisors is an integer number (934597920).

Almost surely, 2^12431812565 is an apocalyptic number.

It is an amenable number.

12431812565 is a deficient number, since it is larger than the sum of its proper divisors (2521754155).

12431812565 is a wasteful number, since it uses less digits than its factorization.

12431812565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4412.

The product of its digits is 57600, while the sum is 38.

The spelling of 12431812565 in words is "twelve billion, four hundred thirty-one million, eight hundred twelve thousand, five hundred sixty-five".