717625722641 has 2 divisors, whose sum is σ = 717625722642. Its totient is φ = 717625722640.

The previous prime is 717625722631. The next prime is 717625722677. The reversal of 717625722641 is 146227526717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 700060196416 + 17565526225 = 836696^2 + 132535^2 .

It is a cyclic number.

It is not a de Polignac number, because 717625722641 - 2⁶ = 717625722577 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 717625722641.

It is not a weakly prime, because it can be changed into another prime (717625722631) 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, 358812861320 + 358812861321.

It is an arithmetic number, because the mean of its divisors is an integer number (358812861321).

Almost surely, 2^717625722641 is an apocalyptic number.

It is an amenable number.

717625722641 is a deficient number, since it is larger than the sum of its proper divisors (1).

717625722641 is an equidigital number, since it uses as much as digits as its factorization.

717625722641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1975680, while the sum is 50.

The spelling of 717625722641 in words is "seven hundred seventeen billion, six hundred twenty-five million, seven hundred twenty-two thousand, six hundred forty-one".