13323444444 has 72 divisors (see below), whose sum is σ = 34021823472. Its totient is φ = 4396008960.

The previous prime is 13323444443. The next prime is 13323444457. The reversal of 13323444444 is 44444432331.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 13323444399 and 13323444408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13323444443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3948342 + ... + 3951714.

It is an arithmetic number, because the mean of its divisors is an integer number (472525326).

Almost surely, 2^13323444444 is an apocalyptic number.

It is an amenable number.

13323444444 is an abundant number, since it is smaller than the sum of its proper divisors (20698379028).

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

13323444444 is a wasteful number, since it uses less digits than its factorization.

13323444444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467 (or 4462 counting only the distinct ones).

The product of its digits is 221184, while the sum is 36.

Adding to 13323444444 its reverse (44444432331), we get a palindrome (57767876775).

The spelling of 13323444444 in words is "thirteen billion, three hundred twenty-three million, four hundred forty-four thousand, four hundred forty-four".