12099917361 has 64 divisors (see below), whose sum is σ = 19571763200. Its totient is φ = 6641248320.

The previous prime is 12099917339. The next prime is 12099917377. The reversal of 12099917361 is 16371999021.

It is not a de Polignac number, because 12099917361 - 2¹⁹ = 12099393073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12099917361.

It is not an unprimeable number, because it can be changed into a prime (12099917321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2696826 + ... + 2701308.

It is an arithmetic number, because the mean of its divisors is an integer number (305808800).

Almost surely, 2^12099917361 is an apocalyptic number.

It is an amenable number.

12099917361 is a deficient number, since it is larger than the sum of its proper divisors (7471845839).

12099917361 is an equidigital number, since it uses as much as digits as its factorization.

12099917361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4611 (or 4597 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 48.

The spelling of 12099917361 in words is "twelve billion, ninety-nine million, nine hundred seventeen thousand, three hundred sixty-one".