12660127199 has 16 divisors (see below), whose sum is σ = 13408319232. Its totient is φ = 11929260288.

The previous prime is 12660127189. The next prime is 12660127247. The reversal of 12660127199 is 99172106621.

It is a cyclic number.

It is not a de Polignac number, because 12660127199 - 2⁸ = 12660126943 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 (12660127189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664484 + ... + 683270.

It is an arithmetic number, because the mean of its divisors is an integer number (838019952).

Almost surely, 2^12660127199 is an apocalyptic number.

12660127199 is a deficient number, since it is larger than the sum of its proper divisors (748192033).

12660127199 is a wasteful number, since it uses less digits than its factorization.

12660127199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19246.

The product of its (nonzero) digits is 81648, while the sum is 44.

The spelling of 12660127199 in words is "twelve billion, six hundred sixty million, one hundred twenty-seven thousand, one hundred ninety-nine".