243003440000000 has 704 divisors, whose sum is σ = 646904717357184. Its totient is φ = 90918912000000.

The previous prime is 243003439999973. The next prime is 243003440000003. The reversal of 243003440000000 is 44300342.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (243003440000003) 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 63 ways as a sum of consecutive naturals, for example, 267919999547 + ... + 267920000453.

It is an arithmetic number, because the mean of its divisors is an integer number (918898746246).

Almost surely, 2^{243003440000000} is an apocalyptic number.

243003440000000 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 243003440000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323452358678592).

243003440000000 is an abundant number, since it is smaller than the sum of its proper divisors (403901277357184).

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

243003440000000 is an frugal number, since it uses more digits than its factorization.

243003440000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176 (or 1128 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 243003440000000 its reverse (44300342), we get a palindrome (243003484300342).

The spelling of 243003440000000 in words is "two hundred forty-three trillion, three billion, four hundred forty million", and thus it is an aban number.