It is a congruent number.
It is an unprimeable number.
Almost surely, 220648330161500 is an apocalyptic number.
20648330161500 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 20648330161500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31360299909120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20648330161500 is a wasteful number, since it uses less digits than its factorization.
20648330161500 is an odious number, because the sum of its binary digits is odd.
The spelling of 20648330161500 in words is "twenty trillion, six hundred forty-eight billion, three hundred thirty million, one hundred sixty-one thousand, five hundred".