12168680717 has 2 divisors, whose sum is σ = 12168680718. Its totient is φ = 12168680716.

The previous prime is 12168680683. The next prime is 12168680737. The reversal of 12168680717 is 71708686121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7981814281 + 4186866436 = 89341^2 + 64706^2 .

It is an emirp because it is prime and its reverse (71708686121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12168680717 - 2²⁸ = 11900245261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12168680737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6084340358 + 6084340359.

It is an arithmetic number, because the mean of its divisors is an integer number (6084340359).

Almost surely, 2^12168680717 is an apocalyptic number.

It is an amenable number.

12168680717 is a deficient number, since it is larger than the sum of its proper divisors (1).

12168680717 is an equidigital number, since it uses as much as digits as its factorization.

12168680717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 47.

The spelling of 12168680717 in words is "twelve billion, one hundred sixty-eight million, six hundred eighty thousand, seven hundred seventeen".