21842845068 has 192 divisors, whose sum is σ = 59865781248. Its totient is φ = 6131220480.

The previous prime is 21842845051. The next prime is 21842845069. The reversal of 21842845068 is 86054824812.

It is not an unprimeable number, because it can be changed into a prime (21842845069) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37855596 + ... + 37856172.

It is an arithmetic number, because the mean of its divisors is an integer number (311800944).

Almost surely, 2^21842845068 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 21842845068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29932890624).

21842845068 is an abundant number, since it is smaller than the sum of its proper divisors (38022936180).

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

21842845068 is a wasteful number, since it uses less digits than its factorization.

21842845068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 48.

The spelling of 21842845068 in words is "twenty-one billion, eight hundred forty-two million, eight hundred forty-five thousand, sixty-eight".