220404020865 has 32 divisors (see below), whose sum is σ = 403226090496. Its totient is φ = 100705725120.

The previous prime is 220404020857. The next prime is 220404020867. The reversal of 220404020865 is 568020404022.

It is not a de Polignac number, because 220404020865 - 2³ = 220404020857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220404020867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 313671 + ... + 734300.

It is an arithmetic number, because the mean of its divisors is an integer number (12600815328).

Almost surely, 2^220404020865 is an apocalyptic number.

It is an amenable number.

220404020865 is a deficient number, since it is larger than the sum of its proper divisors (182822069631).

220404020865 is a wasteful number, since it uses less digits than its factorization.

220404020865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049989.

The product of its (nonzero) digits is 30720, while the sum is 33.

Adding to 220404020865 its reverse (568020404022), we get a palindrome (788424424887).

The spelling of 220404020865 in words is "two hundred twenty billion, four hundred four million, twenty thousand, eight hundred sixty-five".