22440421344 has 48 divisors (see below), whose sum is σ = 64261209600. Its totient is φ = 6800127360.

The previous prime is 22440421313. The next prime is 22440421351. The reversal of 22440421344 is 44312404422.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10624144 + ... + 10626255.

It is an arithmetic number, because the mean of its divisors is an integer number (1338775200).

Almost surely, 2^22440421344 is an apocalyptic number.

22440421344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22440421344 is an abundant number, since it is smaller than the sum of its proper divisors (41820788256).

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

22440421344 is a wasteful number, since it uses less digits than its factorization.

22440421344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21250423 (or 21250415 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 22440421344 its reverse (44312404422), we get a palindrome (66752825766).

The spelling of 22440421344 in words is "twenty-two billion, four hundred forty million, four hundred twenty-one thousand, three hundred forty-four".