717712365427 has 2 divisors, whose sum is σ = 717712365428. Its totient is φ = 717712365426.

The previous prime is 717712365313. The next prime is 717712365431. The reversal of 717712365427 is 724563217717.

It is a strong prime.

It is an emirp because it is prime and its reverse (724563217717) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-717712365427 is a prime.

It is a super-2 number, since 2×717712365427² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (717712365127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358856182713 + 358856182714.

It is an arithmetic number, because the mean of its divisors is an integer number (358856182714).

Almost surely, 2^717712365427 is an apocalyptic number.

717712365427 is a deficient number, since it is larger than the sum of its proper divisors (1).

717712365427 is an equidigital number, since it uses as much as digits as its factorization.

717712365427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3457440, while the sum is 52.

The spelling of 717712365427 in words is "seven hundred seventeen billion, seven hundred twelve million, three hundred sixty-five thousand, four hundred twenty-seven".