717563382449 has 2 divisors, whose sum is σ = 717563382450. Its totient is φ = 717563382448.

The previous prime is 717563382421. The next prime is 717563382509. The reversal of 717563382449 is 944283365717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 691611783424 + 25951599025 = 831632^2 + 161095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-717563382449 is a prime.

It is not a weakly prime, because it can be changed into another prime (717563882449) 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 as a sum of consecutive naturals, namely, 358781691224 + 358781691225.

It is an arithmetic number, because the mean of its divisors is an integer number (358781691225).

Almost surely, 2^717563382449 is an apocalyptic number.

It is an amenable number.

717563382449 is a deficient number, since it is larger than the sum of its proper divisors (1).

717563382449 is an equidigital number, since it uses as much as digits as its factorization.

717563382449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30481920, while the sum is 59.

The spelling of 717563382449 in words is "seven hundred seventeen billion, five hundred sixty-three million, three hundred eighty-two thousand, four hundred forty-nine".