12111716303569 has 2 divisors, whose sum is σ = 12111716303570. Its totient is φ = 12111716303568.

The previous prime is 12111716303563. The next prime is 12111716303573. The reversal of 12111716303569 is 96530361711121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11541049372944 + 570666930625 = 3397212^2 + 755425^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111716303569 - 2¹¹ = 12111716301521 is a prime.

It is a super-2 number, since 2×12111716303569² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12111716303563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055858151784 + 6055858151785.

It is an arithmetic number, because the mean of its divisors is an integer number (6055858151785).

Almost surely, 2^{12111716303569} is an apocalyptic number.

It is an amenable number.

12111716303569 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111716303569 is an equidigital number, since it uses as much as digits as its factorization.

12111716303569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 46.

The spelling of 12111716303569 in words is "twelve trillion, one hundred eleven billion, seven hundred sixteen million, three hundred three thousand, five hundred sixty-nine".