21843934848 has 384 divisors, whose sum is σ = 69837768000. Its totient is φ = 6772211712.

The previous prime is 21843934793. The next prime is 21843934897. The reversal of 21843934848 is 84843934812.

21843934848 is a `hidden beast` number, since 218 + 43 + 9 + 348 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21843934794 and 21843934803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57635523 + ... + 57635901.

Almost surely, 2^21843934848 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 21843934848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34918884000).

21843934848 is an abundant number, since it is smaller than the sum of its proper divisors (47993833152).

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

21843934848 is a wasteful number, since it uses less digits than its factorization.

21843934848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534 (or 510 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 54.

The spelling of 21843934848 in words is "twenty-one billion, eight hundred forty-three million, nine hundred thirty-four thousand, eight hundred forty-eight".