717718947713 has 4 divisors (see below), whose sum is σ = 722882393520. Its totient is φ = 712555501908.

The previous prime is 717718947707. The next prime is 717718947773. The reversal of 717718947713 is 317749817717.

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, and also an emirpimes, since its reverse is a distinct semiprime: 317749817717 = 73 ⋅4352737229.

It is a cyclic number.

It is not a de Polignac number, because 717718947713 - 2²⁰ = 717717899137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (717718947703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2581722695 + ... + 2581722972.

It is an arithmetic number, because the mean of its divisors is an integer number (180720598380).

Almost surely, 2^717718947713 is an apocalyptic number.

It is an amenable number.

717718947713 is a deficient number, since it is larger than the sum of its proper divisors (5163445807).

717718947713 is a wasteful number, since it uses less digits than its factorization.

717718947713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5163445806.

The product of its digits is 14521248, while the sum is 62.

The spelling of 717718947713 in words is "seven hundred seventeen billion, seven hundred eighteen million, nine hundred forty-seven thousand, seven hundred thirteen".