9915972048 is a `hidden beast` number, since 9 + 9 + 1 + 597 + 2 + 0 + 48 = 666.
It is a congruent number.
It is an unprimeable number.
Almost surely, 29915972048 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 9915972048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14360268384).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
9915972048 is a wasteful number, since it uses less digits than its factorization.
9915972048 is an evil number, because the sum of its binary digits is even.
The square root of 9915972048 is about 99578.9739252218. The cubic root of 9915972048 is about 2148.3832841831.
The spelling of 9915972048 in words is "nine billion, nine hundred fifteen million, nine hundred seventy-two thousand, forty-eight".