12668073199 has 4 divisors (see below), whose sum is σ = 12669394120. Its totient is φ = 12666752280.

The previous prime is 12668073157. The next prime is 12668073263. The reversal of 12668073199 is 99137086621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99137086621 = 9587 ⋅10340783.

It is a cyclic number.

It is not a de Polignac number, because 12668073199 - 2²¹ = 12665976047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12668073109) 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, 645969 + ... + 665290.

It is an arithmetic number, because the mean of its divisors is an integer number (3167348530).

Almost surely, 2^12668073199 is an apocalyptic number.

12668073199 is a deficient number, since it is larger than the sum of its proper divisors (1320921).

12668073199 is an equidigital number, since it uses as much as digits as its factorization.

12668073199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320920.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 12668073199 in words is "twelve billion, six hundred sixty-eight million, seventy-three thousand, one hundred ninety-nine".