12111716565743 has 2 divisors, whose sum is σ = 12111716565744. Its totient is φ = 12111716565742.

The previous prime is 12111716565731. The next prime is 12111716565791. The reversal of 12111716565743 is 34756561711121.

12111716565743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12111716565743 - 2⁶ = 12111716565679 is a prime.

It is a super-2 number, since 2×12111716565743² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12111716565691 and 12111716565700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12111716565713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055858282871 + 6055858282872.

It is an arithmetic number, because the mean of its divisors is an integer number (6055858282872).

Almost surely, 2^{12111716565743} is an apocalyptic number.

12111716565743 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111716565743 is an equidigital number, since it uses as much as digits as its factorization.

12111716565743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 50.

The spelling of 12111716565743 in words is "twelve trillion, one hundred eleven billion, seven hundred sixteen million, five hundred sixty-five thousand, seven hundred forty-three".