166205863116 has 60 divisors (see below), whose sum is σ = 434641810680. Its totient is φ = 55383229440.

The previous prime is 166205863091. The next prime is 166205863123. The reversal of 166205863116 is 611368502661.

166205863116 is a `hidden beast` number, since 1 + 6 + 6 + 2 + 0 + 5 + 8 + 631 + 1 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 890380 + ... + 1060748.

It is an arithmetic number, because the mean of its divisors is an integer number (7244030178).

Almost surely, 2^166205863116 is an apocalyptic number.

It is an amenable number.

166205863116 is an abundant number, since it is smaller than the sum of its proper divisors (268435947564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166205863116 is a wasteful number, since it uses less digits than its factorization.

166205863116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173396 (or 173385 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 166205863116 in words is "one hundred sixty-six billion, two hundred five million, eight hundred sixty-three thousand, one hundred sixteen".