243444004440 has 128 divisors (see below), whose sum is σ = 898870210560. Its totient is φ = 51364007424.

The previous prime is 243444004439. The next prime is 243444004481. The reversal of 243444004440 is 44400444342.

243444004440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 31 ways as a sum of consecutive naturals, for example, 11135784 + ... + 11157623.

It is an arithmetic number, because the mean of its divisors is an integer number (7022423520).

Almost surely, 2^243444004440 is an apocalyptic number.

243444004440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243444004440 is an abundant number, since it is smaller than the sum of its proper divisors (655426206120).

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

243444004440 is a wasteful number, since it uses less digits than its factorization.

243444004440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22293441 (or 22293437 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 33.

Adding to 243444004440 its reverse (44400444342), we get a palindrome (287844448782).

The spelling of 243444004440 in words is "two hundred forty-three billion, four hundred forty-four million, four thousand, four hundred forty".