21843043200 has 960 divisors, whose sum is σ = 90355288320. Its totient is φ = 5150822400.

The previous prime is 21843043199. The next prime is 21843043217. The reversal of 21843043200 is 234034812.

21843043200 is a `hidden beast` number, since 21 + 8 + 430 + 4 + 3 + 200 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 134006319 + ... + 134006481.

It is an arithmetic number, because the mean of its divisors is an integer number (94120092).

Almost surely, 2^21843043200 is an apocalyptic number.

21843043200 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 21843043200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45177644160).

21843043200 is an abundant number, since it is smaller than the sum of its proper divisors (68512245120).

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

21843043200 is a wasteful number, since it uses less digits than its factorization.

21843043200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The spelling of 21843043200 in words is "twenty-one billion, eight hundred forty-three million, forty-three thousand, two hundred".