166655111606 has 8 divisors (see below), whose sum is σ = 250211383104. Its totient is φ = 83251317240.

The previous prime is 166655111573. The next prime is 166655111621. The reversal of 166655111606 is 606111556661.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38116550 + ... + 38120921.

It is an arithmetic number, because the mean of its divisors is an integer number (31276422888).

Almost surely, 2^166655111606 is an apocalyptic number.

166655111606 is a deficient number, since it is larger than the sum of its proper divisors (83556271498).

166655111606 is a wasteful number, since it uses less digits than its factorization.

166655111606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76238566.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 166655111606 in words is "one hundred sixty-six billion, six hundred fifty-five million, one hundred eleven thousand, six hundred six".