220426564665 has 16 divisors (see below), whose sum is σ = 352688616000. Its totient is φ = 117558796992.

The previous prime is 220426564639. The next prime is 220426564681. The reversal of 220426564665 is 566465624022.

220426564665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220426564665 - 2⁸ = 220426564409 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1241911 + ... + 1408259.

It is an arithmetic number, because the mean of its divisors is an integer number (22043038500).

Almost surely, 2^220426564665 is an apocalyptic number.

It is an amenable number.

220426564665 is a deficient number, since it is larger than the sum of its proper divisors (132262051335).

220426564665 is a wasteful number, since it uses less digits than its factorization.

220426564665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254696.

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 220426564665 in words is "two hundred twenty billion, four hundred twenty-six million, five hundred sixty-four thousand, six hundred sixty-five".