12611372689 has 2 divisors, whose sum is σ = 12611372690. Its totient is φ = 12611372688.

The previous prime is 12611372687. The next prime is 12611372747. The reversal of 12611372689 is 98627311621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10736482689 + 1874890000 = 103617^2 + 43300^2 .

It is a cyclic number.

It is not a de Polignac number, because 12611372689 - 2¹ = 12611372687 is a prime.

It is a super-2 number, since 2×12611372689² (a number of 21 digits) contains 22 as substring.

Together with 12611372687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12611372687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6305686344 + 6305686345.

It is an arithmetic number, because the mean of its divisors is an integer number (6305686345).

Almost surely, 2^12611372689 is an apocalyptic number.

It is an amenable number.

12611372689 is a deficient number, since it is larger than the sum of its proper divisors (1).

12611372689 is an equidigital number, since it uses as much as digits as its factorization.

12611372689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The spelling of 12611372689 in words is "twelve billion, six hundred eleven million, three hundred seventy-two thousand, six hundred eighty-nine".