12669258218 has 16 divisors (see below), whose sum is σ = 19473357960. Its totient is φ = 6178233600.

The previous prime is 12669258163. The next prime is 12669258263. The reversal of 12669258218 is 81285296621.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9012274489 + 3656983729 = 94933^2 + 60473^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267488 + ... + 311268.

Almost surely, 2^12669258218 is an apocalyptic number.

12669258218 is a deficient number, since it is larger than the sum of its proper divisors (6804099742).

12669258218 is a wasteful number, since it uses less digits than its factorization.

12669258218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47353.

The product of its digits is 829440, while the sum is 50.

The spelling of 12669258218 in words is "twelve billion, six hundred sixty-nine million, two hundred fifty-eight thousand, two hundred eighteen".