166610565166 has 8 divisors (see below), whose sum is σ = 263069313480. Its totient is φ = 78920794008.

The previous prime is 166610565103. The next prime is 166610565217. The reversal of 166610565166 is 661565016661.

166610565166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2192244241 + ... + 2192244316.

It is an arithmetic number, because the mean of its divisors is an integer number (32883664185).

Almost surely, 2^166610565166 is an apocalyptic number.

166610565166 is a deficient number, since it is larger than the sum of its proper divisors (96458748314).

166610565166 is a wasteful number, since it uses less digits than its factorization.

166610565166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384488578.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 166610565166 in words is "one hundred sixty-six billion, six hundred ten million, five hundred sixty-five thousand, one hundred sixty-six".