12139418079 has 36 divisors (see below), whose sum is σ = 19166725240. Its totient is φ = 7666922160.

The previous prime is 12139418069. The next prime is 12139418111. The reversal of 12139418079 is 97081493121.

12139418079 is a `hidden beast` number, since 12 + 1 + 394 + 180 + 79 = 666.

It is not a de Polignac number, because 12139418079 - 2¹⁶ = 12139352543 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 (12139418059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 75969 + ... + 173349.

Almost surely, 2^12139418079 is an apocalyptic number.

12139418079 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12139418079 is a deficient number, since it is larger than the sum of its proper divisors (7027307161).

12139418079 is an frugal number, since it uses more digits than its factorization.

12139418079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97424 (or 97403 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 12139418079 in words is "twelve billion, one hundred thirty-nine million, four hundred eighteen thousand, seventy-nine".