12669495269 has 2 divisors, whose sum is σ = 12669495270. Its totient is φ = 12669495268.

The previous prime is 12669495197. The next prime is 12669495281. The reversal of 12669495269 is 96259496621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12333213025 + 336282244 = 111055^2 + 18338^2 .

It is an emirp because it is prime and its reverse (96259496621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12669495269 - 2¹² = 12669491173 is a prime.

It is a super-2 number, since 2×12669495269² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12669495299) 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, 6334747634 + 6334747635.

It is an arithmetic number, because the mean of its divisors is an integer number (6334747635).

Almost surely, 2^12669495269 is an apocalyptic number.

It is an amenable number.

12669495269 is a deficient number, since it is larger than the sum of its proper divisors (1).

12669495269 is an equidigital number, since it uses as much as digits as its factorization.

12669495269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12597120, while the sum is 59.

The spelling of 12669495269 in words is "twelve billion, six hundred sixty-nine million, four hundred ninety-five thousand, two hundred sixty-nine".