12647071529 has 2 divisors, whose sum is σ = 12647071530. Its totient is φ = 12647071528.

The previous prime is 12647071513. The next prime is 12647071553. The reversal of 12647071529 is 92517074621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7999513600 + 4647557929 = 89440^2 + 68173^2 .

It is a cyclic number.

It is not a de Polignac number, because 12647071529 - 2⁴ = 12647071513 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12647071529.

It is not a weakly prime, because it can be changed into another prime (12647071559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6323535764 + 6323535765.

It is an arithmetic number, because the mean of its divisors is an integer number (6323535765).

Almost surely, 2^12647071529 is an apocalyptic number.

It is an amenable number.

12647071529 is a deficient number, since it is larger than the sum of its proper divisors (1).

12647071529 is an equidigital number, since it uses as much as digits as its factorization.

12647071529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 12647071529 in words is "twelve billion, six hundred forty-seven million, seventy-one thousand, five hundred twenty-nine".