243454442000 has 240 divisors, whose sum is σ = 747038972160. Its totient is φ = 75881568000.

The previous prime is 243454441981. The next prime is 243454442009. The reversal of 243454442000 is 244454342.

It is not an unprimeable number, because it can be changed into a prime (243454442009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 965081 + ... + 1190919.

It is an arithmetic number, because the mean of its divisors is an integer number (3112662384).

Almost surely, 2^243454442000 is an apocalyptic number.

243454442000 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 243454442000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373519486080).

243454442000 is an abundant number, since it is smaller than the sum of its proper divisors (503584530160).

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

243454442000 is a wasteful number, since it uses less digits than its factorization.

243454442000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225887 (or 225864 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 32.

Adding to 243454442000 its reverse (244454342), we get a palindrome (243698896342).

The spelling of 243454442000 in words is "two hundred forty-three billion, four hundred fifty-four million, four hundred forty-two thousand".