243543234400 has 288 divisors, whose sum is σ = 614998137600. Its totient is φ = 94145587200.

The previous prime is 243543234391. The next prime is 243543234413. The reversal of 243543234400 is 4432345342.

243543234400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×243543234400³ (a number of 35 digits) contains 333 as substring.

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 47 ways as a sum of consecutive naturals, for example, 860576659 + ... + 860576941.

It is an arithmetic number, because the mean of its divisors is an integer number (2135410200).

Almost surely, 2^243543234400 is an apocalyptic number.

243543234400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243543234400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307499068800).

243543234400 is an abundant number, since it is smaller than the sum of its proper divisors (371454903200).

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

243543234400 is a wasteful number, since it uses less digits than its factorization.

243543234400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 34.

Adding to 243543234400 its reverse (4432345342), we get a palindrome (247975579742).

The spelling of 243543234400 in words is "two hundred forty-three billion, five hundred forty-three million, two hundred thirty-four thousand, four hundred".