12647476529 has 2 divisors, whose sum is σ = 12647476530. Its totient is φ = 12647476528.

The previous prime is 12647476507. The next prime is 12647476561. The reversal of 12647476529 is 92567474621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12605226529 + 42250000 = 112273^2 + 6500^2 .

It is an emirp because it is prime and its reverse (92567474621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12647476529 - 2¹² = 12647472433 is a prime.

It is not a weakly prime, because it can be changed into another prime (12647476579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6323738264 + 6323738265.

It is an arithmetic number, because the mean of its divisors is an integer number (6323738265).

Almost surely, 2^12647476529 is an apocalyptic number.

It is an amenable number.

12647476529 is a deficient number, since it is larger than the sum of its proper divisors (1).

12647476529 is an equidigital number, since it uses as much as digits as its factorization.

12647476529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 53.

The spelling of 12647476529 in words is "twelve billion, six hundred forty-seven million, four hundred seventy-six thousand, five hundred twenty-nine".