2216570166 has 24 divisors (see below), whose sum is σ = 4968175680. Its totient is φ = 713378736.

The previous prime is 2216570131. The next prime is 2216570171. The reversal of 2216570166 is 6610756122.

It is a happy number.

2216570166 is a `hidden beast` number, since 2 + 21 + 6 + 570 + 1 + 66 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2216570166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2122630 + ... + 2123673.

It is an arithmetic number, because the mean of its divisors is an integer number (207007320).

Almost surely, 2^2216570166 is an apocalyptic number.

2216570166 is an abundant number, since it is smaller than the sum of its proper divisors (2751605514).

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

2216570166 is a wasteful number, since it uses less digits than its factorization.

2216570166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4246340 (or 4246337 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 2216570166 is about 47080.4648022935. The cubic root of 2216570166 is about 1303.8485884864.

The spelling of 2216570166 in words is "two billion, two hundred sixteen million, five hundred seventy thousand, one hundred sixty-six".