12566634325111 has 2 divisors, whose sum is σ = 12566634325112. Its totient is φ = 12566634325110.

The previous prime is 12566634325067. The next prime is 12566634325123. The reversal of 12566634325111 is 11152343666521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12566634325111 - 2¹⁷ = 12566634194039 is a prime.

It is a super-2 number, since 2×12566634325111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12566634385111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6283317162555 + 6283317162556.

It is an arithmetic number, because the mean of its divisors is an integer number (6283317162556).

Almost surely, 2^{12566634325111} is an apocalyptic number.

12566634325111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12566634325111 is an equidigital number, since it uses as much as digits as its factorization.

12566634325111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 46.

The spelling of 12566634325111 in words is "twelve trillion, five hundred sixty-six billion, six hundred thirty-four million, three hundred twenty-five thousand, one hundred eleven".