Base | Representation |
---|---|
bin | 111111011111110000… |
… | …010010000000100110 |
3 | 20111222110211220102200 |
4 | 333133300102000212 |
5 | 2104112143012121 |
6 | 51153141315330 |
7 | 4632345364062 |
oct | 773760220046 |
9 | 214873756380 |
10 | 68178485286 |
11 | 26a06a8310a |
12 | 11268a05b46 |
13 | 6576c638b2 |
14 | 342ab3caa2 |
15 | 1b90757a26 |
hex | fdfc12026 |
68178485286 has 24 divisors (see below), whose sum is σ = 147732128544. Its totient is φ = 22724303760.
The previous prime is 68178485257. The next prime is 68178485293. The reversal of 68178485286 is 68258487186.
68178485286 is a `hidden beast` number, since 6 + 8 + 1 + 78 + 485 + 2 + 86 = 666.
68178485286 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81171 + ... + 378081.
It is an arithmetic number, because the mean of its divisors is an integer number (6155505356).
Almost surely, 268178485286 is an apocalyptic number.
68178485286 is an abundant number, since it is smaller than the sum of its proper divisors (79553643258).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68178485286 is a wasteful number, since it uses less digits than its factorization.
68178485286 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 309676 (or 309673 counting only the distinct ones).
The product of its digits is 41287680, while the sum is 63.
The spelling of 68178485286 in words is "sixty-eight billion, one hundred seventy-eight million, four hundred eighty-five thousand, two hundred eighty-six".
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