166802904473 has 2 divisors, whose sum is σ = 166802904474. Its totient is φ = 166802904472.

The previous prime is 166802904467. The next prime is 166802904517. The reversal of 166802904473 is 374409208661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144241963264 + 22560941209 = 379792^2 + 150203^2 .

It is a cyclic number.

It is not a de Polignac number, because 166802904473 - 2⁸ = 166802904217 is a prime.

It is not a weakly prime, because it can be changed into another prime (166802904403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83401452236 + 83401452237.

It is an arithmetic number, because the mean of its divisors is an integer number (83401452237).

Almost surely, 2^166802904473 is an apocalyptic number.

It is an amenable number.

166802904473 is a deficient number, since it is larger than the sum of its proper divisors (1).

166802904473 is an equidigital number, since it uses as much as digits as its factorization.

166802904473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 166802904473 in words is "one hundred sixty-six billion, eight hundred two million, nine hundred four thousand, four hundred seventy-three".