It is a happy number.
It is an unprimeable number.
Almost surely, 263870020650896 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 63870020650896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87664061633520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
63870020650896 is a wasteful number, since it uses less digits than its factorization.
63870020650896 is an evil number, because the sum of its binary digits is even.
The spelling of 63870020650896 in words is "sixty-three trillion, eight hundred seventy billion, twenty million, six hundred fifty thousand, eight hundred ninety-six".