243232440000 has 560 divisors, whose sum is σ = 886303292160. Its totient is φ = 58360320000.

The previous prime is 243232439999. The next prime is 243232440007. The reversal of 243232440000 is 44232342.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (243232440007) 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 79 ways as a sum of consecutive naturals, for example, 135959106 + ... + 135960894.

Almost surely, 2^243232440000 is an apocalyptic number.

243232440000 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 243232440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443151646080).

243232440000 is an abundant number, since it is smaller than the sum of its proper divisors (643070852160).

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

243232440000 is a wasteful number, since it uses less digits than its factorization.

243232440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938 (or 1913 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 243232440000 its reverse (44232342), we get a palindrome (243276672342).

The spelling of 243232440000 in words is "two hundred forty-three billion, two hundred thirty-two million, four hundred forty thousand".