12665136223 has 16 divisors (see below), whose sum is σ = 13717759840. Its totient is φ = 11652336000.

The previous prime is 12665136217. The next prime is 12665136247. The reversal of 12665136223 is 32263156621.

It is not a de Polignac number, because 12665136223 - 2⁵ = 12665136191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12665136823) 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, 363673 + ... + 396973.

It is an arithmetic number, because the mean of its divisors is an integer number (857359990).

Almost surely, 2^12665136223 is an apocalyptic number.

12665136223 is a deficient number, since it is larger than the sum of its proper divisors (1052623617).

12665136223 is a wasteful number, since it uses less digits than its factorization.

12665136223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33898.

The product of its digits is 77760, while the sum is 37.

The spelling of 12665136223 in words is "twelve billion, six hundred sixty-five million, one hundred thirty-six thousand, two hundred twenty-three".