220894455579 has 16 divisors (see below), whose sum is σ = 336748715520. Its totient is φ = 126170038080.

The previous prime is 220894455547. The next prime is 220894455581. The reversal of 220894455579 is 975554498022.

It is not a de Polignac number, because 220894455579 - 2⁵ = 220894455547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220894455079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2257839 + ... + 2353640.

It is an arithmetic number, because the mean of its divisors is an integer number (21046794720).

Almost surely, 2^220894455579 is an apocalyptic number.

220894455579 is a deficient number, since it is larger than the sum of its proper divisors (115854259941).

220894455579 is a wasteful number, since it uses less digits than its factorization.

220894455579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4613770.

The product of its (nonzero) digits is 36288000, while the sum is 60.

The spelling of 220894455579 in words is "two hundred twenty billion, eight hundred ninety-four million, four hundred fifty-five thousand, five hundred seventy-nine".