220443566660 has 24 divisors (see below), whose sum is σ = 466261938240. Its totient is φ = 87543055584.

The previous prime is 220443566561. The next prime is 220443566669. The reversal of 220443566660 is 66665344022.

220443566660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (220443566669) 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, 39645344 + ... + 39650903.

It is an arithmetic number, because the mean of its divisors is an integer number (19427580760).

Almost surely, 2^220443566660 is an apocalyptic number.

220443566660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220443566660 is an abundant number, since it is smaller than the sum of its proper divisors (245818371580).

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

220443566660 is a wasteful number, since it uses less digits than its factorization.

220443566660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79296395 (or 79296393 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 220443566660 in words is "two hundred twenty billion, four hundred forty-three million, five hundred sixty-six thousand, six hundred sixty".