In asmone there is a pseudo instruction called "even" or ".even", I can't remember. (And here's nothing to look up or try it out.)
In the assembler you can use pretty much numeric formats, the assembler will take care of the rest. If you want to use hexadecimal numbers, just use the "$" character, if you want you can use decimal numbers too, then no extra character required.
As Kronos said "#" has not such function, it just indicates that a direct value follows, instead of an address(ing mode).
