12116927917 has 2 divisors, whose sum is σ = 12116927918. Its totient is φ = 12116927916.

The previous prime is 12116927897. The next prime is 12116927971. The reversal of 12116927917 is 71972961121.

Together with next prime (12116927971) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6832510281 + 5284417636 = 82659^2 + 72694^2 .

It is a cyclic number.

It is not a de Polignac number, because 12116927917 - 2⁷ = 12116927789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12116924917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6058463958 + 6058463959.

It is an arithmetic number, because the mean of its divisors is an integer number (6058463959).

Almost surely, 2^12116927917 is an apocalyptic number.

It is an amenable number.

12116927917 is a deficient number, since it is larger than the sum of its proper divisors (1).

12116927917 is an equidigital number, since it uses as much as digits as its factorization.

12116927917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 46.

The spelling of 12116927917 in words is "twelve billion, one hundred sixteen million, nine hundred twenty-seven thousand, nine hundred seventeen".