It is a congruent number.
It is an unprimeable number.
Almost surely, 222994358887640 is an apocalyptic number.
22994358887640 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 pseudoperfect number, because it is the sum of a subset of its proper divisors.
22994358887640 is a wasteful number, since it uses less digits than its factorization.
22994358887640 is an evil number, because the sum of its binary digits is even.
The spelling of 22994358887640 in words is "twenty-two trillion, nine hundred ninety-four billion, three hundred fifty-eight million, eight hundred eighty-seven thousand, six hundred forty".