It is a tau number, because it is divible by the number of its divisors (12).
It is an unprimeable number.
Almost surely, 281474680808132 is an apocalyptic number.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
81474680808132 is a wasteful number, since it uses less digits than its factorization.
81474680808132 is an evil number, because the sum of its binary digits is even.
The spelling of 81474680808132 in words is "eighty-one trillion, four hundred seventy-four billion, six hundred eighty million, eight hundred eight thousand, one hundred thirty-two".