220430421440 has 112 divisors (see below), whose sum is σ = 529629624000. Its totient is φ = 87381245952.

The previous prime is 220430421397. The next prime is 220430421509. The reversal of 220430421440 is 44124034022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16359026 + ... + 16372494.

Almost surely, 2^220430421440 is an apocalyptic number.

220430421440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220430421440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264814812000).

220430421440 is an abundant number, since it is smaller than the sum of its proper divisors (309199202560).

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

220430421440 is a wasteful number, since it uses less digits than its factorization.

220430421440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13942 (or 13932 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 220430421440 its reverse (44124034022), we get a palindrome (264554455462).

The spelling of 220430421440 in words is "two hundred twenty billion, four hundred thirty million, four hundred twenty-one thousand, four hundred forty".