18978979282200 is a `hidden beast` number, since 1 + 8 + 9 + 78 + 9 + 79 + 282 + 200 = 666.
It is a congruent number.
It is an unprimeable number.
Almost surely, 218978979282200 is an apocalyptic number.
18978979282200 is a gapful number since it is divisible by the number (10) 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 18978979282200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38444990105340).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18978979282200 is a wasteful number, since it uses less digits than its factorization.
18978979282200 is an evil number, because the sum of its binary digits is even.
The spelling of 18978979282200 in words is "eighteen trillion, nine hundred seventy-eight billion, nine hundred seventy-nine million, two hundred eighty-two thousand, two hundred".