166136205886 has 12 divisors (see below), whose sum is σ = 289890726768. Its totient is φ = 71201231052.

The previous prime is 166136205811. The next prime is 166136205947. The reversal of 166136205886 is 688502631661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 847633606 + ... + 847633801.

It is an arithmetic number, because the mean of its divisors is an integer number (24157560564).

Almost surely, 2^166136205886 is an apocalyptic number.

166136205886 is a deficient number, since it is larger than the sum of its proper divisors (123754520882).

166136205886 is a wasteful number, since it uses less digits than its factorization.

166136205886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695267423 (or 1695267416 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 166136205886 in words is "one hundred sixty-six billion, one hundred thirty-six million, two hundred five thousand, eight hundred eighty-six".