22443443440 has 40 divisors (see below), whose sum is σ = 56924736048. Its totient is φ = 8161251840.

The previous prime is 22443443437. The next prime is 22443443467. The reversal of 22443443440 is 4434434422.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 22443443396 and 22443443405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12751077 + ... + 12752836.

Almost surely, 2^22443443440 is an apocalyptic number.

22443443440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22443443440 is an abundant number, since it is smaller than the sum of its proper divisors (34481292608).

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

22443443440 is a wasteful number, since it uses less digits than its factorization.

22443443440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25503937 (or 25503931 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 34.

Adding to 22443443440 its reverse (4434434422), we get a palindrome (26877877862).

It can be divided in two parts, 2 and 2443443440, that added together give a palindrome (2443443442).

The spelling of 22443443440 in words is "twenty-two billion, four hundred forty-three million, four hundred forty-three thousand, four hundred forty".