Adding to 4000020000000 its reverse (200004), we get a palindrome (4000020200004).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a congruent number.
It is an unprimeable number.
Almost surely, 24000020000000 is an apocalyptic number.
4000020000000 is a gapful number since it is divisible by the number (40) 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 4000020000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6710850007680).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
4000020000000 is an frugal number, since it uses more digits than its factorization.
4000020000000 is an odious number, because the sum of its binary digits is odd.
The spelling of 4000020000000 in words is "four trillion, twenty million", and thus it is an aban number.