12207916717 has 2 divisors, whose sum is σ = 12207916718. Its totient is φ = 12207916716.

The previous prime is 12207916709. The next prime is 12207916741. The reversal of 12207916717 is 71761970221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10118146921 + 2089769796 = 100589^2 + 45714^2 .

It is a cyclic number.

It is not a de Polignac number, because 12207916717 - 2³ = 12207916709 is a prime.

It is a super-3 number, since 3×12207916717³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12207913717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6103958358 + 6103958359.

It is an arithmetic number, because the mean of its divisors is an integer number (6103958359).

Almost surely, 2^12207916717 is an apocalyptic number.

It is an amenable number.

12207916717 is a deficient number, since it is larger than the sum of its proper divisors (1).

12207916717 is an equidigital number, since it uses as much as digits as its factorization.

12207916717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74088, while the sum is 43.

The spelling of 12207916717 in words is "twelve billion, two hundred seven million, nine hundred sixteen thousand, seven hundred seventeen".