243554440000 has 70 divisors (see below), whose sum is σ = 603935955194. Its totient is φ = 97421760000.

The previous prime is 243554439991. The next prime is 243554440001. The reversal of 243554440000 is 44455342.

243554440000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 61587356224 + 181967083776 = 248168^2 + 426576^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243554440001) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 3004431 + ... + 3084430.

Almost surely, 2^243554440000 is an apocalyptic number.

243554440000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243554440000 is an abundant number, since it is smaller than the sum of its proper divisors (360381515194).

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

243554440000 is an frugal number, since it uses more digits than its factorization.

243554440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6088893 (or 6088868 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 243554440000 its reverse (44455342), we get a palindrome (243598895342).

The spelling of 243554440000 in words is "two hundred forty-three billion, five hundred fifty-four million, four hundred forty thousand".