12669979297 has 4 divisors (see below), whose sum is σ = 12692726676. Its totient is φ = 12647231920.

The previous prime is 12669979243. The next prime is 12669979303. The reversal of 12669979297 is 79297996621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1110289041 + 11559690256 = 33321^2 + 107516^2 .

It is a cyclic number.

It is not a de Polignac number, because 12669979297 - 2¹¹ = 12669977249 is a prime.

It is a super-2 number, since 2×12669979297² (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 (12669979237) 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, 11372854 + ... + 11373967.

It is an arithmetic number, because the mean of its divisors is an integer number (3173181669).

Almost surely, 2^12669979297 is an apocalyptic number.

It is an amenable number.

12669979297 is a deficient number, since it is larger than the sum of its proper divisors (22747379).

12669979297 is an equidigital number, since it uses as much as digits as its factorization.

12669979297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22747378.

The product of its digits is 46294416, while the sum is 67.

The spelling of 12669979297 in words is "twelve billion, six hundred sixty-nine million, nine hundred seventy-nine thousand, two hundred ninety-seven".