22440143209 has 24 divisors (see below), whose sum is σ = 25362993600. Its totient is φ = 19824694560.

The previous prime is 22440143171. The next prime is 22440143213. The reversal of 22440143209 is 90234104422.

It is not a de Polignac number, because 22440143209 - 2¹¹ = 22440141161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22440143809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4398342 + ... + 4403440.

It is an arithmetic number, because the mean of its divisors is an integer number (1056791400).

Almost surely, 2^22440143209 is an apocalyptic number.

It is an amenable number.

22440143209 is a deficient number, since it is larger than the sum of its proper divisors (2922850391).

22440143209 is a wasteful number, since it uses less digits than its factorization.

22440143209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6141 (or 6130 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

It can be divided in two parts, 22440 and 143209, that added together give a square (165649 = 407²).

The spelling of 22440143209 in words is "twenty-two billion, four hundred forty million, one hundred forty-three thousand, two hundred nine".