12111716565713 has 2 divisors, whose sum is σ = 12111716565714. Its totient is φ = 12111716565712.

The previous prime is 12111716565679. The next prime is 12111716565731. The reversal of 12111716565713 is 31756561711121.

It is a happy number.

Together with next prime (12111716565731) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9121559716864 + 2990156848849 = 3020192^2 + 1729207^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111716565713 - 2¹⁸ = 12111716303569 is a prime.

It is not a weakly prime, because it can be changed into another prime (12111716565743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055858282856 + 6055858282857.

It is an arithmetic number, because the mean of its divisors is an integer number (6055858282857).

Almost surely, 2^{12111716565713} is an apocalyptic number.

It is an amenable number.

12111716565713 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111716565713 is an equidigital number, since it uses as much as digits as its factorization.

12111716565713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 47.

The spelling of 12111716565713 in words is "twelve trillion, one hundred eleven billion, seven hundred sixteen million, five hundred sixty-five thousand, seven hundred thirteen".