166666685163 has 16 divisors (see below), whose sum is σ = 243911542656. Its totient is φ = 100390415040.

The previous prime is 166666685149. The next prime is 166666685209. The reversal of 166666685163 is 361586666661.

It is not a de Polignac number, because 166666685163 - 2⁸ = 166666684907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166666685097 and 166666685106.

It is not an unprimeable number, because it can be changed into a prime (166666685123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15486970 + ... + 15497727.

It is an arithmetic number, because the mean of its divisors is an integer number (15244471416).

Almost surely, 2^166666685163 is an apocalyptic number.

166666685163 is a deficient number, since it is larger than the sum of its proper divisors (77244857493).

166666685163 is a wasteful number, since it uses less digits than its factorization.

166666685163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30984874.

The product of its digits is 33592320, while the sum is 60.

The spelling of 166666685163 in words is "one hundred sixty-six billion, six hundred sixty-six million, six hundred eighty-five thousand, one hundred sixty-three".