717420376247 has 2 divisors, whose sum is σ = 717420376248. Its totient is φ = 717420376246.

The previous prime is 717420376229. The next prime is 717420376289. The reversal of 717420376247 is 742673024717.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 717420376247 - 2²⁶ = 717353267383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 717420376195 and 717420376204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (717420376207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358710188123 + 358710188124.

It is an arithmetic number, because the mean of its divisors is an integer number (358710188124).

Almost surely, 2^717420376247 is an apocalyptic number.

717420376247 is a deficient number, since it is larger than the sum of its proper divisors (1).

717420376247 is an equidigital number, since it uses as much as digits as its factorization.

717420376247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2765952, while the sum is 50.

The spelling of 717420376247 in words is "seven hundred seventeen billion, four hundred twenty million, three hundred seventy-six thousand, two hundred forty-seven".