12669856219 has 4 divisors (see below), whose sum is σ = 12678849720. Its totient is φ = 12660862720.

The previous prime is 12669856211. The next prime is 12669856229. The reversal of 12669856219 is 91265896621.

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

It is a cyclic number.

It is not a de Polignac number, because 12669856219 - 2³ = 12669856211 is a prime.

It is a super-2 number, since 2×12669856219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12669856219.

It is not an unprimeable number, because it can be changed into a prime (12669856211) 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, 4494637 + ... + 4497454.

It is an arithmetic number, because the mean of its divisors is an integer number (3169712430).

Almost surely, 2^12669856219 is an apocalyptic number.

12669856219 is a deficient number, since it is larger than the sum of its proper divisors (8993501).

12669856219 is an equidigital number, since it uses as much as digits as its factorization.

12669856219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8993500.

The product of its digits is 2799360, while the sum is 55.

The spelling of 12669856219 in words is "twelve billion, six hundred sixty-nine million, eight hundred fifty-six thousand, two hundred nineteen".