12708649313 has 2 divisors, whose sum is σ = 12708649314. Its totient is φ = 12708649312.

The previous prime is 12708649307. The next prime is 12708649409. The reversal of 12708649313 is 31394680721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11714382289 + 994267024 = 108233^2 + 31532^2 .

It is an emirp because it is prime and its reverse (31394680721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12708649313 - 2⁴ = 12708649297 is a prime.

It is not a weakly prime, because it can be changed into another prime (12708649913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6354324656 + 6354324657.

It is an arithmetic number, because the mean of its divisors is an integer number (6354324657).

Almost surely, 2^12708649313 is an apocalyptic number.

It is an amenable number.

12708649313 is a deficient number, since it is larger than the sum of its proper divisors (1).

12708649313 is an equidigital number, since it uses as much as digits as its factorization.

12708649313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 12708649313 in words is "twelve billion, seven hundred eight million, six hundred forty-nine thousand, three hundred thirteen".