166632031238473 has 2 divisors, whose sum is σ = 166632031238474. Its totient is φ = 166632031238472.

The previous prime is 166632031238467. The next prime is 166632031238489. The reversal of 166632031238473 is 374832130236661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86168834902089 + 80463196336384 = 9282717^2 + 8970128^2 .

It is a cyclic number.

It is not a de Polignac number, because 166632031238473 - 2⁹ = 166632031237961 is a prime.

It is not a weakly prime, because it can be changed into another prime (166632031238173) 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, 83316015619236 + 83316015619237.

It is an arithmetic number, because the mean of its divisors is an integer number (83316015619237).

Almost surely, 2^{166632031238473} is an apocalyptic number.

It is an amenable number.

166632031238473 is a deficient number, since it is larger than the sum of its proper divisors (1).

166632031238473 is an equidigital number, since it uses as much as digits as its factorization.

166632031238473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15676416, while the sum is 55.

The spelling of 166632031238473 in words is "one hundred sixty-six trillion, six hundred thirty-two billion, thirty-one million, two hundred thirty-eight thousand, four hundred seventy-three".