81467580204 is a `hidden beast` number, since 8 + 1 + 4 + 67 + 580 + 2 + 0 + 4 = 666.
It is a self number, because there is not a number n which added to its sum of digits gives 81467580204.
It is an unprimeable number.
Almost surely, 281467580204 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 81467580204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105805491064).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
81467580204 is a wasteful number, since it uses less digits than its factorization.
81467580204 is an evil number, because the sum of its binary digits is even.
The spelling of 81467580204 in words is "eighty-one billion, four hundred sixty-seven million, five hundred eighty thousand, two hundred four".