12168904899 has 4 divisors (see below), whose sum is σ = 16225206536. Its totient is φ = 8112603264.

The previous prime is 12168904897. The next prime is 12168904903. The reversal of 12168904899 is 99840986121.

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

It is not a de Polignac number, because 12168904899 - 2¹ = 12168904897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12168904897) 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, 2028150814 + ... + 2028150819.

It is an arithmetic number, because the mean of its divisors is an integer number (4056301634).

Almost surely, 2^12168904899 is an apocalyptic number.

12168904899 is a deficient number, since it is larger than the sum of its proper divisors (4056301637).

12168904899 is an equidigital number, since it uses as much as digits as its factorization.

12168904899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4056301636.

The product of its (nonzero) digits is 2239488, while the sum is 57.

The spelling of 12168904899 in words is "twelve billion, one hundred sixty-eight million, nine hundred four thousand, eight hundred ninety-nine".