-3 and 5
2 and 11
There are infinite calculations that result with the number in question. For example: 12345678987654320 +1 = 12345678987654321 12345678987654319 +2 = 12345678987654321 and so on.
2 and 8.5
2, 5, and 201
11 and 16.
2 and 57
9 and 2
24691357975308642
86*1 43*2
2 x 210.5 = 421
37 times 3 = 111.