12912718697 has 2 divisors, whose sum is σ = 12912718698. Its totient is φ = 12912718696.

The previous prime is 12912718657. The next prime is 12912718699. The reversal of 12912718697 is 79681721921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9989802601 + 2922916096 = 99949^2 + 54064^2 .

It is a cyclic number.

It is not a de Polignac number, because 12912718697 - 2⁶ = 12912718633 is a prime.

Together with 12912718699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12912718699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6456359348 + 6456359349.

It is an arithmetic number, because the mean of its divisors is an integer number (6456359349).

Almost surely, 2^12912718697 is an apocalyptic number.

It is an amenable number.

12912718697 is a deficient number, since it is larger than the sum of its proper divisors (1).

12912718697 is an equidigital number, since it uses as much as digits as its factorization.

12912718697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 53.

The spelling of 12912718697 in words is "twelve billion, nine hundred twelve million, seven hundred eighteen thousand, six hundred ninety-seven".