| Base | Representation |
|---|---|
| bin | 1001101000000100100010… |
| … | …01111001001110001100000 |
| 3 | 2202221122101210022221021100 |
| 4 | 10310002101033021301200 |
| 5 | 10233304114042100300 |
| 6 | 113004243344354400 |
| 7 | 4313224440003105 |
| oct | 464022117116140 |
| 9 | 82848353287240 |
| 10 | 21168035503200 |
| 11 | 682134a212623 |
| 12 | 245a610315a00 |
| 13 | ba71a25100c1 |
| 14 | 532777484aac |
| 15 | 26a968749700 |
| hex | 1340913c9c60 |
21168035503200 has 432 divisors, whose sum is σ = 75150996809616. Its totient is φ = 5606583091200.
The previous prime is 21168035503177. The next prime is 21168035503201. The reversal of 21168035503200 is 230553086112.
21168035503200 is a `hidden beast` number, since 2 + 1 + 1 + 6 + 80 + 3 + 550 + 3 + 20 + 0 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (21168035503201) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 633244887 + ... + 633278313.
It is an arithmetic number, because the mean of its divisors is an integer number (173960640763).
Almost surely, 221168035503200 is an apocalyptic number.
21168035503200 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 21168035503200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37575498404808).
21168035503200 is an abundant number, since it is smaller than the sum of its proper divisors (53982961306416).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21168035503200 is a wasteful number, since it uses less digits than its factorization.
21168035503200 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 34047 (or 34031 counting only the distinct ones).
The product of its (nonzero) digits is 43200, while the sum is 36.
Adding to 21168035503200 its reverse (230553086112), we get a palindrome (21398588589312).
The spelling of 21168035503200 in words is "twenty-one trillion, one hundred sixty-eight billion, thirty-five million, five hundred three thousand, two hundred".
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