yes
987,654,312
123456789 can be written in 362,880 different ways, you can calculate this by using the permutation function nPr.
you get cheese
324536
yes
987,654,312
123456789 + 123456789 = 246913578
123456789 can be written in 362,880 different ways, you can calculate this by using the permutation function nPr.
1.524157875019052e+16
3 and 9. And they divide into 123456789 whether or not you use divisibility rules!
the answer is 15241578750190521
15,241,578,750,190,521
you get cheese
There are 60480 numbers.
543234567890-123456789 = 543111111101
1