12668365769 has 4 divisors (see below), whose sum is σ = 12669152196. Its totient is φ = 12667579344.

The previous prime is 12668365763. The next prime is 12668365781. The reversal of 12668365769 is 96756386621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96756386621 = 9643 ⋅10033847.

It can be written as a sum of positive squares in 2 ways, for example, as 10503790144 + 2164575625 = 102488^2 + 46525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12668365769 is a prime.

It is a super-2 number, since 2×12668365769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12668365763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368534 + ... + 401439.

It is an arithmetic number, because the mean of its divisors is an integer number (3167288049).

Almost surely, 2^12668365769 is an apocalyptic number.

It is an amenable number.

12668365769 is a deficient number, since it is larger than the sum of its proper divisors (786427).

12668365769 is an equidigital number, since it uses as much as digits as its factorization.

12668365769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786426.

The product of its digits is 19595520, while the sum is 59.

The spelling of 12668365769 in words is "twelve billion, six hundred sixty-eight million, three hundred sixty-five thousand, seven hundred sixty-nine".