718716513329 has 2 divisors, whose sum is σ = 718716513330. Its totient is φ = 718716513328.

The previous prime is 718716513299. The next prime is 718716513331. The reversal of 718716513329 is 923315617817.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 636920513329 + 81796000000 = 798073^2 + 286000^2 .

It is a cyclic number.

It is not a de Polignac number, because 718716513329 - 2¹⁶ = 718716447793 is a prime.

Together with 718716513331, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (718716513029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359358256664 + 359358256665.

It is an arithmetic number, because the mean of its divisors is an integer number (359358256665).

Almost surely, 2^718716513329 is an apocalyptic number.

It is an amenable number.

718716513329 is a deficient number, since it is larger than the sum of its proper divisors (1).

718716513329 is an equidigital number, since it uses as much as digits as its factorization.

718716513329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 53.

The spelling of 718716513329 in words is "seven hundred eighteen billion, seven hundred sixteen million, five hundred thirteen thousand, three hundred twenty-nine".