22144323444 has 48 divisors (see below), whose sum is σ = 52564646400. Its totient is φ = 7253737056.

The previous prime is 22144323379. The next prime is 22144323449. The reversal of 22144323444 is 44432344122.

It is a super-2 number, since 2×22144323444² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144323449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3910287 + ... + 3915945.

It is an arithmetic number, because the mean of its divisors is an integer number (1095096800).

Almost surely, 2^22144323444 is an apocalyptic number.

It is an amenable number.

22144323444 is an abundant number, since it is smaller than the sum of its proper divisors (30420322956).

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

22144323444 is a wasteful number, since it uses less digits than its factorization.

22144323444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11252 (or 11250 counting only the distinct ones).

The product of its digits is 73728, while the sum is 33.

Adding to 22144323444 its reverse (44432344122), we get a palindrome (66576667566).

The spelling of 22144323444 in words is "twenty-two billion, one hundred forty-four million, three hundred twenty-three thousand, four hundred forty-four".