243453120000 has 400 divisors, whose sum is σ = 813842886912. Its totient is φ = 64650240000.

The previous prime is 243453119891. The next prime is 243453120007. The reversal of 243453120000 is 21354342.

It is a tau number, because it is divible by the number of its divisors (400).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243453120007) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 352319655 + ... + 352320345.

Almost surely, 2^243453120000 is an apocalyptic number.

243453120000 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 243453120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406921443456).

243453120000 is an abundant number, since it is smaller than the sum of its proper divisors (570389766912).

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

243453120000 is an frugal number, since it uses more digits than its factorization.

243453120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 243453120000 its reverse (21354342), we get a palindrome (243474474342).

The spelling of 243453120000 in words is "two hundred forty-three billion, four hundred fifty-three million, one hundred twenty thousand".