12442765749 has 16 divisors (see below), whose sum is σ = 17602363008. Its totient is φ = 7791178752.

The previous prime is 12442765729. The next prime is 12442765757. The reversal of 12442765749 is 94756724421.

It is not a de Polignac number, because 12442765749 - 2⁵ = 12442765717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12442765729) 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, 225652 + ... + 275325.

It is an arithmetic number, because the mean of its divisors is an integer number (1100147688).

Almost surely, 2^12442765749 is an apocalyptic number.

It is an amenable number.

12442765749 is a deficient number, since it is larger than the sum of its proper divisors (5159597259).

12442765749 is a wasteful number, since it uses less digits than its factorization.

12442765749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501484.

The product of its digits is 3386880, while the sum is 51.

The spelling of 12442765749 in words is "twelve billion, four hundred forty-two million, seven hundred sixty-five thousand, seven hundred forty-nine".