306166606322197 has 2 divisors, whose sum is σ = 306166606322198. Its totient is φ = 306166606322196.

The previous prime is 306166606322141. The next prime is 306166606322201. The reversal of 306166606322197 is 791223606661603.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157524814690321 + 148641791631876 = 12550889^2 + 12191874^2 .

It is a cyclic number.

It is not a de Polignac number, because 306166606322197 - 2⁷ = 306166606322069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (306166606322597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153083303161098 + 153083303161099.

It is an arithmetic number, because the mean of its divisors is an integer number (153083303161099).

Almost surely, 2^{306166606322197} is an apocalyptic number.

It is an amenable number.

306166606322197 is a deficient number, since it is larger than the sum of its proper divisors (1).

306166606322197 is an equidigital number, since it uses as much as digits as its factorization.

306166606322197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17635968, while the sum is 58.

The spelling of 306166606322197 in words is "three hundred six trillion, one hundred sixty-six billion, six hundred six million, three hundred twenty-two thousand, one hundred ninety-seven".