166863170386 has 24 divisors (see below), whose sum is σ = 275177085120. Its totient is φ = 75830434680.

The previous prime is 166863170371. The next prime is 166863170393. The reversal of 166863170386 is 683071368661.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1079235 + ... + 1224121.

It is an arithmetic number, because the mean of its divisors is an integer number (11465711880).

Almost surely, 2^166863170386 is an apocalyptic number.

166863170386 is a deficient number, since it is larger than the sum of its proper divisors (108313914734).

166863170386 is a wasteful number, since it uses less digits than its factorization.

166863170386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149670 (or 149659 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 166863170386 in words is "one hundred sixty-six billion, eight hundred sixty-three million, one hundred seventy thousand, three hundred eighty-six".