i can not install viber on linux lite 4.2 64 bit

[Artim]

It looks like it's missing dependencies.  Right-click on the downloaded file and select open with gdebi.  You then enter your root password when prompted.

I would really suggest not installing software that isn't in the repositories, but if you must, it's better done through a PPA than just downloaded from a web site.  It won't be updated if you just add the .deb file without a PPA.  Use caution!