12146138999 has 6 divisors (see below), whose sum is σ = 12483286704. Its totient is φ = 11817863640.

The previous prime is 12146138989. The next prime is 12146139001. The reversal of 12146138999 is 99983164121.

It is not a de Polignac number, because 12146138999 - 2²⁸ = 11877703543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12146138999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12146138989) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4434767 + ... + 4437504.

It is an arithmetic number, because the mean of its divisors is an integer number (2080547784).

Almost surely, 2^12146138999 is an apocalyptic number.

12146138999 is a deficient number, since it is larger than the sum of its proper divisors (337147705).

12146138999 is an frugal number, since it uses more digits than its factorization.

12146138999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8872345 (or 8872308 counting only the distinct ones).

The product of its digits is 839808, while the sum is 53.

The spelling of 12146138999 in words is "twelve billion, one hundred forty-six million, one hundred thirty-eight thousand, nine hundred ninety-nine".