22043681856 has 336 divisors, whose sum is σ = 76966291584. Its totient is φ = 5888360448.

The previous prime is 22043681843. The next prime is 22043681861. The reversal of 22043681856 is 65818634022.

22043681856 is a `hidden beast` number, since 2 + 204 + 368 + 1 + 85 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

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, 11171686 + ... + 11173658.

It is an arithmetic number, because the mean of its divisors is an integer number (229066344).

Almost surely, 2^22043681856 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 22043681856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38483145792).

22043681856 is an abundant number, since it is smaller than the sum of its proper divisors (54922609728).

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

22043681856 is a wasteful number, since it uses less digits than its factorization.

22043681856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178 (or 2165 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 22043681856 in words is "twenty-two billion, forty-three million, six hundred eighty-one thousand, eight hundred fifty-six".