13071476752721 has 2 divisors, whose sum is σ = 13071476752722. Its totient is φ = 13071476752720.

The previous prime is 13071476752687. The next prime is 13071476752759. The reversal of 13071476752721 is 12725767417031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9921334534225 + 3150142218496 = 3149815^2 + 1774864^2 .

It is a cyclic number.

It is not a de Polignac number, because 13071476752721 - 2³⁰ = 13070403010897 is a prime.

It is not a weakly prime, because it can be changed into another prime (13071476752771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6535738376360 + 6535738376361.

It is an arithmetic number, because the mean of its divisors is an integer number (6535738376361).

Almost surely, 2^{13071476752721} is an apocalyptic number.

It is an amenable number.

13071476752721 is a deficient number, since it is larger than the sum of its proper divisors (1).

13071476752721 is an equidigital number, since it uses as much as digits as its factorization.

13071476752721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3457440, while the sum is 53.

The spelling of 13071476752721 in words is "thirteen trillion, seventy-one billion, four hundred seventy-six million, seven hundred fifty-two thousand, seven hundred twenty-one".