1297817239713 has 4 divisors (see below), whose sum is σ = 1730422986288. Its totient is φ = 865211493140.

The previous prime is 1297817239619. The next prime is 1297817239723. The reversal of 1297817239713 is 3179327187921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1297817239713 - 2⁴⁰ = 198305611937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1297817239723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216302873283 + ... + 216302873288.

It is an arithmetic number, because the mean of its divisors is an integer number (432605746572).

Almost surely, 2^{1297817239713} is an apocalyptic number.

It is an amenable number.

1297817239713 is a deficient number, since it is larger than the sum of its proper divisors (432605746575).

1297817239713 is an equidigital number, since it uses as much as digits as its factorization.

1297817239713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432605746574.

The product of its digits is 8001504, while the sum is 60.

The spelling of 1297817239713 in words is "one trillion, two hundred ninety-seven billion, eight hundred seventeen million, two hundred thirty-nine thousand, seven hundred thirteen".