12663907169 has 2 divisors, whose sum is σ = 12663907170. Its totient is φ = 12663907168.

The previous prime is 12663907147. The next prime is 12663907177. The reversal of 12663907169 is 96170936621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11993097169 + 670810000 = 109513^2 + 25900^2 .

It is an emirp because it is prime and its reverse (96170936621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12663907169 is a prime.

It is a super-2 number, since 2×12663907169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12663907129) 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, 6331953584 + 6331953585.

It is an arithmetic number, because the mean of its divisors is an integer number (6331953585).

Almost surely, 2^12663907169 is an apocalyptic number.

It is an amenable number.

12663907169 is a deficient number, since it is larger than the sum of its proper divisors (1).

12663907169 is an equidigital number, since it uses as much as digits as its factorization.

12663907169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 50.

The spelling of 12663907169 in words is "twelve billion, six hundred sixty-three million, nine hundred seven thousand, one hundred sixty-nine".