667722250755097 has 2 divisors, whose sum is σ = 667722250755098. Its totient is φ = 667722250755096.

The previous prime is 667722250755073. The next prime is 667722250755107. The reversal of 667722250755097 is 790557052227766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 664256755766041 + 3465494989056 = 25773179^2 + 1861584^2 .

It is a cyclic number.

It is not a de Polignac number, because 667722250755097 - 2²³ = 667722242366489 is a prime.

It is not a weakly prime, because it can be changed into another prime (667722250750097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333861125377548 + 333861125377549.

It is an arithmetic number, because the mean of its divisors is an integer number (333861125377549).

Almost surely, 2^{667722250755097} is an apocalyptic number.

It is an amenable number.

667722250755097 is a deficient number, since it is larger than the sum of its proper divisors (1).

667722250755097 is an equidigital number, since it uses as much as digits as its factorization.

667722250755097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777924000, while the sum is 70.

The spelling of 667722250755097 in words is "six hundred sixty-seven trillion, seven hundred twenty-two billion, two hundred fifty million, seven hundred fifty-five thousand, ninety-seven".