It is an unprimeable number.
Almost surely, 220858543112 is an apocalyptic number.
20858543112 is a gapful number since it is divisible by the number (22) 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 20858543112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28682035200).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20858543112 is a wasteful number, since it uses less digits than its factorization.
20858543112 is an odious number, because the sum of its binary digits is odd.
The spelling of 20858543112 in words is "twenty billion, eight hundred fifty-eight million, five hundred forty-three thousand, one hundred twelve".