12117165937 has 2 divisors, whose sum is σ = 12117165938. Its totient is φ = 12117165936.

The previous prime is 12117165857. The next prime is 12117166051. The reversal of 12117165937 is 73956171121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6448732416 + 5668433521 = 80304^2 + 75289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12117165937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12117165893 and 12117165902.

It is not a weakly prime, because it can be changed into another prime (12117165337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6058582968 + 6058582969.

It is an arithmetic number, because the mean of its divisors is an integer number (6058582969).

Almost surely, 2^12117165937 is an apocalyptic number.

It is an amenable number.

12117165937 is a deficient number, since it is larger than the sum of its proper divisors (1).

12117165937 is an equidigital number, since it uses as much as digits as its factorization.

12117165937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 43.

The spelling of 12117165937 in words is "twelve billion, one hundred seventeen million, one hundred sixty-five thousand, nine hundred thirty-seven".