13447245817 has 2 divisors, whose sum is σ = 13447245818. Its totient is φ = 13447245816.

The previous prime is 13447245797. The next prime is 13447245827. The reversal of 13447245817 is 71854274431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6875063056 + 6572182761 = 82916^2 + 81069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13447245817 is a prime.

It is not a weakly prime, because it can be changed into another prime (13447245827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6723622908 + 6723622909.

It is an arithmetic number, because the mean of its divisors is an integer number (6723622909).

Almost surely, 2^13447245817 is an apocalyptic number.

It is an amenable number.

13447245817 is a deficient number, since it is larger than the sum of its proper divisors (1).

13447245817 is an equidigital number, since it uses as much as digits as its factorization.

13447245817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 752640, while the sum is 46.

The spelling of 13447245817 in words is "thirteen billion, four hundred forty-seven million, two hundred forty-five thousand, eight hundred seventeen".