243120244440 has 64 divisors (see below), whose sum is σ = 729673401600. Its totient is φ = 64804272512.

The previous prime is 243120244373. The next prime is 243120244447. The reversal of 243120244440 is 44442021342.

243120244440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 243120244398 and 243120244407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243120244447) 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 15 ways as a sum of consecutive naturals, for example, 152412 + ... + 713771.

It is an arithmetic number, because the mean of its divisors is an integer number (11401146900).

Almost surely, 2^243120244440 is an apocalyptic number.

243120244440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243120244440 is an abundant number, since it is smaller than the sum of its proper divisors (486553157160).

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

243120244440 is a wasteful number, since it uses less digits than its factorization.

243120244440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868536 (or 868532 counting only the distinct ones).

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

Adding to 243120244440 its reverse (44442021342), we get a palindrome (287562265782).

The spelling of 243120244440 in words is "two hundred forty-three billion, one hundred twenty million, two hundred forty-four thousand, four hundred forty".