16605105066 has 24 divisors (see below), whose sum is σ = 39248430624. Its totient is φ = 5031849960.

The previous prime is 16605105059. The next prime is 16605105067. The reversal of 16605105066 is 66050150661.

It is a self number, because there is not a number n which added to its sum of digits gives 16605105066.

It is not an unprimeable number, because it can be changed into a prime (16605105067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41931886 + ... + 41932281.

It is an arithmetic number, because the mean of its divisors is an integer number (1635351276).

Almost surely, 2^16605105066 is an apocalyptic number.

16605105066 is an abundant number, since it is smaller than the sum of its proper divisors (22643325558).

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

16605105066 is a wasteful number, since it uses less digits than its factorization.

16605105066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83864186 (or 83864183 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 16605105066 in words is "sixteen billion, six hundred five million, one hundred five thousand, sixty-six".