13444013220 has 48 divisors (see below), whose sum is σ = 41065351488. Its totient is φ = 3259154560.

The previous prime is 13444013131. The next prime is 13444013237. The reversal of 13444013220 is 2231044431.

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, 10184199 + ... + 10185518.

It is an arithmetic number, because the mean of its divisors is an integer number (855528156).

Almost surely, 2^13444013220 is an apocalyptic number.

13444013220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13444013220 is an abundant number, since it is smaller than the sum of its proper divisors (27621338268).

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

13444013220 is a wasteful number, since it uses less digits than its factorization.

13444013220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20369740 (or 20369738 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 13444013220 its reverse (2231044431), we get a palindrome (15675057651).

The spelling of 13444013220 in words is "thirteen billion, four hundred forty-four million, thirteen thousand, two hundred twenty".