20443340444 has 12 divisors (see below), whose sum is σ = 35869257984. Its totient is φ = 10194981024.

The previous prime is 20443340443. The next prime is 20443340459. The reversal of 20443340444 is 44404334402.

It is a super-2 number, since 2×20443340444² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20443340444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20443340443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6670577 + ... + 6673640.

It is an arithmetic number, because the mean of its divisors is an integer number (2989104832).

Almost surely, 2^20443340444 is an apocalyptic number.

It is an amenable number.

20443340444 is a deficient number, since it is larger than the sum of its proper divisors (15425917540).

20443340444 is a wasteful number, since it uses less digits than its factorization.

20443340444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13344604 (or 13344602 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 20443340444 its reverse (44404334402), we get a palindrome (64847674846).

The spelling of 20443340444 in words is "twenty billion, four hundred forty-three million, three hundred forty thousand, four hundred forty-four".