12144323999 has 4 divisors (see below), whose sum is σ = 12145596936. Its totient is φ = 12143051064.

The previous prime is 12144323987. The next prime is 12144324013. The reversal of 12144323999 is 99932344121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12144323999 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 (12144323299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622049 + ... + 641274.

It is an arithmetic number, because the mean of its divisors is an integer number (3036399234).

Almost surely, 2^12144323999 is an apocalyptic number.

12144323999 is a deficient number, since it is larger than the sum of its proper divisors (1272937).

12144323999 is an equidigital number, since it uses as much as digits as its factorization.

12144323999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272936.

The product of its digits is 419904, while the sum is 47.

The spelling of 12144323999 in words is "twelve billion, one hundred forty-four million, three hundred twenty-three thousand, nine hundred ninety-nine".