166206686852 has 24 divisors (see below), whose sum is σ = 292591178880. Its totient is φ = 82610428320.

The previous prime is 166206686803. The next prime is 166206686879. The reversal of 166206686852 is 258686602661.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393638 + ... + 698114.

It is an arithmetic number, because the mean of its divisors is an integer number (12191299120).

Almost surely, 2^166206686852 is an apocalyptic number.

It is an amenable number.

166206686852 is a deficient number, since it is larger than the sum of its proper divisors (126384492028).

166206686852 is a wasteful number, since it uses less digits than its factorization.

166206686852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305291 (or 305289 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 56.

The spelling of 166206686852 in words is "one hundred sixty-six billion, two hundred six million, six hundred eighty-six thousand, eight hundred fifty-two".