Adding to 20344633055165 its reverse (56155033644302), we get a palindrome (76499666699467).
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
Almost surely, 220344633055165 is an apocalyptic number.
It is an amenable number.
20344633055165 is an equidigital number, since it uses as much as digits as its factorization.
20344633055165 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4068926611038.
The spelling of 20344633055165 in words is "twenty trillion, three hundred forty-four billion, six hundred thirty-three million, fifty-five thousand, one hundred sixty-five".