243111303552 has 128 divisors (see below), whose sum is σ = 696695096160. Its totient is φ = 74668326912.

The previous prime is 243111303541. The next prime is 243111303559. The reversal of 243111303552 is 255303111342.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243111303559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2736828 + ... + 2824260.

Almost surely, 2^243111303552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243111303552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348347548080).

243111303552 is an abundant number, since it is smaller than the sum of its proper divisors (453583792608).

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

243111303552 is a wasteful number, since it uses less digits than its factorization.

243111303552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88020 (or 88008 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 243111303552 its reverse (255303111342), we get a palindrome (498414414894).

The spelling of 243111303552 in words is "two hundred forty-three billion, one hundred eleven million, three hundred three thousand, five hundred fifty-two".