166833518317 has 2 divisors, whose sum is σ = 166833518318. Its totient is φ = 166833518316.

The previous prime is 166833518311. The next prime is 166833518339. The reversal of 166833518317 is 713815338661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161985320676 + 4848197641 = 402474^2 + 69629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166833518317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166833518311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83416759158 + 83416759159.

It is an arithmetic number, because the mean of its divisors is an integer number (83416759159).

Almost surely, 2^166833518317 is an apocalyptic number.

It is an amenable number.

166833518317 is a deficient number, since it is larger than the sum of its proper divisors (1).

166833518317 is an equidigital number, since it uses as much as digits as its factorization.

166833518317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 52.

The spelling of 166833518317 in words is "one hundred sixty-six billion, eight hundred thirty-three million, five hundred eighteen thousand, three hundred seventeen".