| Base | Representation |
|---|---|
| bin | 10001101100100011001… |
| … | …000000010000010000000 |
| 3 | 11022020212122221100110000 |
| 4 | 101230203020002002000 |
| 5 | 124411000123142200 |
| 6 | 2330352542240000 |
| 7 | 153600140253453 |
| oct | 21544310020200 |
| 9 | 4266778840400 |
| 10 | 1216065052800 |
| 11 | 429804024034 |
| 12 | 177821886000 |
| 13 | 8a89c999a00 |
| 14 | 42c01d9149a |
| 15 | 21975281300 |
| hex | 11b23202080 |
1216065052800 has 2880 divisors, whose sum is σ = 5444457068160. Its totient is φ = 265686220800.
The previous prime is 1216065052759. The next prime is 1216065052841. The reversal of 1216065052800 is 82505606121.
1216065052800 is a `hidden beast` number, since 1 + 21 + 60 + 6 + 50 + 528 + 0 + 0 = 666.
It is an interprime number because it is at equal distance from previous prime (1216065052759) and next prime (1216065052841).
It is a tau number, because it is divible by the number of its divisors (2880).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 359 ways as a sum of consecutive naturals, for example, 17127676765 + ... + 17127676835.
It is an arithmetic number, because the mean of its divisors is an integer number (1890436482).
Almost surely, 21216065052800 is an apocalyptic number.
1216065052800 is a gapful number since it is divisible by the number (10) 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 1216065052800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2722228534080).
1216065052800 is an abundant number, since it is smaller than the sum of its proper divisors (4228392015360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1216065052800 is a wasteful number, since it uses less digits than its factorization.
1216065052800 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 173 (or 134 counting only the distinct ones).
The product of its (nonzero) digits is 28800, while the sum is 36.
The spelling of 1216065052800 in words is "one trillion, two hundred sixteen billion, sixty-five million, fifty-two thousand, eight hundred".
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