12642796689 has 16 divisors (see below), whose sum is σ = 17099034624. Its totient is φ = 8307608400.

The previous prime is 12642796687. The next prime is 12642796693. The reversal of 12642796689 is 98669724621.

It is not a de Polignac number, because 12642796689 - 2¹ = 12642796687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12642796687) 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, 1307904 + ... + 1317534.

It is an arithmetic number, because the mean of its divisors is an integer number (1068689664).

Almost surely, 2^12642796689 is an apocalyptic number.

It is an amenable number.

12642796689 is a deficient number, since it is larger than the sum of its proper divisors (4456237935).

12642796689 is an equidigital number, since it uses as much as digits as its factorization.

12642796689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15868.

The product of its digits is 15676416, while the sum is 60.

The spelling of 12642796689 in words is "twelve billion, six hundred forty-two million, seven hundred ninety-six thousand, six hundred eighty-nine".