220539664479 has 8 divisors (see below), whose sum is σ = 294580810800. Its totient is φ = 146762480576.

The previous prime is 220539664469. The next prime is 220539664481. The reversal of 220539664479 is 974466935022.

220539664479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220539664479 - 2¹⁶ = 220539598943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220539664469) 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, 65988654 + ... + 65991995.

It is an arithmetic number, because the mean of its divisors is an integer number (36822601350).

Almost surely, 2^220539664479 is an apocalyptic number.

220539664479 is a deficient number, since it is larger than the sum of its proper divisors (74041146321).

220539664479 is a wasteful number, since it uses less digits than its factorization.

220539664479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131981209.

The product of its (nonzero) digits is 19595520, while the sum is 57.

The spelling of 220539664479 in words is "two hundred twenty billion, five hundred thirty-nine million, six hundred sixty-four thousand, four hundred seventy-nine".