28531145658960 is a `hidden beast` number, since 2 + 8 + 5 + 3 + 1 + 1 + 4 + 565 + 8 + 9 + 60 = 666.
It is a congruent number.
It is an unprimeable number.
Almost surely, 228531145658960 is an apocalyptic number.
28531145658960 is a gapful number since it is divisible by the number (20) 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 28531145658960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56679526670976).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28531145658960 is a wasteful number, since it uses less digits than its factorization.
28531145658960 is an odious number, because the sum of its binary digits is odd.
The spelling of 28531145658960 in words is "twenty-eight trillion, five hundred thirty-one billion, one hundred forty-five million, six hundred fifty-eight thousand, nine hundred sixty".