220286646689 has 4 divisors (see below), whose sum is σ = 220310765124. Its totient is φ = 220262528256.

The previous prime is 220286646667. The next prime is 220286646719. The reversal of 220286646689 is 986646682022.

220286646689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4679654464 + 215606992225 = 68408^2 + 464335^2 .

It is a cyclic number.

It is not a de Polignac number, because 220286646689 - 2²⁴ = 220269869473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220286646659) 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 3 ways as a sum of consecutive naturals, for example, 12045512 + ... + 12063785.

It is an arithmetic number, because the mean of its divisors is an integer number (55077691281).

Almost surely, 2^220286646689 is an apocalyptic number.

It is an amenable number.

220286646689 is a deficient number, since it is larger than the sum of its proper divisors (24118435).

220286646689 is an equidigital number, since it uses as much as digits as its factorization.

220286646689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24118434.

The product of its (nonzero) digits is 23887872, while the sum is 59.

The spelling of 220286646689 in words is "two hundred twenty billion, two hundred eighty-six million, six hundred forty-six thousand, six hundred eighty-nine".