Base | Representation |
---|---|
bin | 111111100101111001… |
… | …011110111001100011 |
3 | 20112020122210200021200 |
4 | 333211321132321203 |
5 | 2104320034420200 |
6 | 51211302452243 |
7 | 4635036455316 |
oct | 774571367143 |
9 | 215218720250 |
10 | 68281560675 |
11 | 26a5a185189 |
12 | 11297434083 |
13 | 6592413153 |
14 | 343a6d097d |
15 | 1b99818800 |
hex | fe5e5ee63 |
68281560675 has 36 divisors (see below), whose sum is σ = 126517110720. Its totient is φ = 35161076160.
The previous prime is 68281560673. The next prime is 68281560691. The reversal of 68281560675 is 57606518286.
68281560675 is a `hidden beast` number, since 6 + 8 + 2 + 8 + 1 + 560 + 6 + 75 = 666.
It is not a de Polignac number, because 68281560675 - 21 = 68281560673 is a prime.
It is not an unprimeable number, because it can be changed into a prime (68281560671) by changing a digit.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5225779 + ... + 5238828.
Almost surely, 268281560675 is an apocalyptic number.
68281560675 is a deficient number, since it is larger than the sum of its proper divisors (58235550045).
68281560675 is a wasteful number, since it uses less digits than its factorization.
68281560675 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10464652 (or 10464644 counting only the distinct ones).
The product of its (nonzero) digits is 4838400, while the sum is 54.
The spelling of 68281560675 in words is "sixty-eight billion, two hundred eighty-one million, five hundred sixty thousand, six hundred seventy-five".
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