12695241089 has 2 divisors, whose sum is σ = 12695241090. Its totient is φ = 12695241088.

The previous prime is 12695241073. The next prime is 12695241131. The reversal of 12695241089 is 98014259621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12432250000 + 262991089 = 111500^2 + 16217^2 .

It is an emirp because it is prime and its reverse (98014259621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12695241089 - 2⁴ = 12695241073 is a prime.

It is a super-2 number, since 2×12695241089² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12695241049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6347620544 + 6347620545.

It is an arithmetic number, because the mean of its divisors is an integer number (6347620545).

Almost surely, 2^12695241089 is an apocalyptic number.

It is an amenable number.

12695241089 is a deficient number, since it is larger than the sum of its proper divisors (1).

12695241089 is an equidigital number, since it uses as much as digits as its factorization.

12695241089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 12695241089 in words is "twelve billion, six hundred ninety-five million, two hundred forty-one thousand, eighty-nine".