717983380897 has 2 divisors, whose sum is σ = 717983380898. Its totient is φ = 717983380896.

The previous prime is 717983380853. The next prime is 717983380931. The reversal of 717983380897 is 798083389717.

717983380897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 510080211601 + 207903169296 = 714199^2 + 455964^2 .

It is a cyclic number.

It is not a de Polignac number, because 717983380897 - 2²⁷ = 717849163169 is a prime.

It is not a weakly prime, because it can be changed into another prime (717983380817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358991690448 + 358991690449.

It is an arithmetic number, because the mean of its divisors is an integer number (358991690449).

Almost surely, 2^717983380897 is an apocalyptic number.

It is an amenable number.

717983380897 is a deficient number, since it is larger than the sum of its proper divisors (1).

717983380897 is an equidigital number, since it uses as much as digits as its factorization.

717983380897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128024064, while the sum is 70.

The spelling of 717983380897 in words is "seven hundred seventeen billion, nine hundred eighty-three million, three hundred eighty thousand, eight hundred ninety-seven".