220420404440 has 16 divisors (see below), whose sum is σ = 495945910080. Its totient is φ = 88168161760.

The previous prime is 220420404439. The next prime is 220420404443. The reversal of 220420404440 is 44404024022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220420404443) 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 3 ways as a sum of consecutive naturals, for example, 2755255016 + ... + 2755255095.

It is an arithmetic number, because the mean of its divisors is an integer number (30996619380).

Almost surely, 2^220420404440 is an apocalyptic number.

220420404440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220420404440 is an abundant number, since it is smaller than the sum of its proper divisors (275525505640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220420404440 is a wasteful number, since it uses less digits than its factorization.

220420404440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5510510122 (or 5510510118 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 220420404440 its reverse (44404024022), we get a palindrome (264824428462).

The spelling of 220420404440 in words is "two hundred twenty billion, four hundred twenty million, four hundred four thousand, four hundred forty".