211066666166 has 16 divisors (see below), whose sum is σ = 321100962048. Its totient is φ = 104033399400.

The previous prime is 211066666163. The next prime is 211066666171. The reversal of 211066666166 is 661666660112.

211066666166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 211066666166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211066666163) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1044791 + ... + 1230333.

It is an arithmetic number, because the mean of its divisors is an integer number (20068810128).

Almost surely, 2^211066666166 is an apocalyptic number.

211066666166 is a deficient number, since it is larger than the sum of its proper divisors (110034295882).

211066666166 is a wasteful number, since it uses less digits than its factorization.

211066666166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193627.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 211066666166 in words is "two hundred eleven billion, sixty-six million, six hundred sixty-six thousand, one hundred sixty-six".