12775634689 has 2 divisors, whose sum is σ = 12775634690. Its totient is φ = 12775634688.

The previous prime is 12775634659. The next prime is 12775634747. The reversal of 12775634689 is 98643657721.

It is an a-pointer prime, because the next prime (12775634747) can be obtained adding 12775634689 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12774650625 + 984064 = 113025^2 + 992^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12775634689 is a prime.

It is not a weakly prime, because it can be changed into another prime (12775634639) 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, 6387817344 + 6387817345.

It is an arithmetic number, because the mean of its divisors is an integer number (6387817345).

Almost surely, 2^12775634689 is an apocalyptic number.

It is an amenable number.

12775634689 is a deficient number, since it is larger than the sum of its proper divisors (1).

12775634689 is an equidigital number, since it uses as much as digits as its factorization.

12775634689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15240960, while the sum is 58.

The spelling of 12775634689 in words is "twelve billion, seven hundred seventy-five million, six hundred thirty-four thousand, six hundred eighty-nine".