Can I get my old number back with Verizon?

Hello,

I had a cell phone number that was always hooked up to my social media accounts. I am currently locked out of one and the only number listed for them to send the security code to is a number that I used to have with Verizon. I called the number, and it says "the number you are trying to dial has been disconnect or no longer in service"

I have not used my Verizon account since being incarcerated. During that time, bills went unpaid, and went into a collection agency. I was wondering, if I were to pay off my Verizon debt, and since they still have my old information, would I be able to get another set up with them and get back my old number that is currently not assigned to anyone else apparently?...

Please help. I have a lot on my social media account that I'll never be able to replace. From amazing adventures to pictures of people whom are no longer living. 

If anyone could please give me some advice, I'd greatly appreciate it.

Again, I am trying to see if I can get my old number back since it doesn't seemed to be assigned to anyone else. Can I request that EXACT number?

THank you in advance!!!