12136868078 has 16 divisors (see below), whose sum is σ = 18646886016. Its totient is φ = 5921515320.

The previous prime is 12136868077. The next prime is 12136868099. The reversal of 12136868078 is 87086863121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12136868071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20225 + ... + 157107.

It is an arithmetic number, because the mean of its divisors is an integer number (1165430376).

Almost surely, 2^12136868078 is an apocalyptic number.

12136868078 is a deficient number, since it is larger than the sum of its proper divisors (6510017938).

12136868078 is a wasteful number, since it uses less digits than its factorization.

12136868078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137959.

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 12136868078 in words is "twelve billion, one hundred thirty-six million, eight hundred sixty-eight thousand, seventy-eight".