20220566166 has 64 divisors (see below), whose sum is σ = 45185817600. Its totient is φ = 6702605568.

The previous prime is 20220566153. The next prime is 20220566167. The reversal of 20220566166 is 66166502202.

It is a self number, because there is not a number n which added to its sum of digits gives 20220566166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220566167) 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 31 ways as a sum of consecutive naturals, for example, 11914630 + ... + 11916326.

It is an arithmetic number, because the mean of its divisors is an integer number (706028400).

Almost surely, 2^20220566166 is an apocalyptic number.

20220566166 is an abundant number, since it is smaller than the sum of its proper divisors (24965251434).

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

20220566166 is a wasteful number, since it uses less digits than its factorization.

20220566166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810 (or 2804 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 20220566166 in words is "twenty billion, two hundred twenty million, five hundred sixty-six thousand, one hundred sixty-six".