Single Member LLC SEP IRA Question

 Hello I currently have a single member LLC and would like to open a SEP IRA. I have a few questions regarding this topic:

 

1. Do you open this using my LLC EIN or my SSN? If you open in your SSN, where do you deduct this?

 

2. I plan on restructuring my business at some point and am wondering if SEP IRA's are transferable to other LLCs?

 

3. If you have multiple single-member LLCs can you have one SEP IRA or do you need one for every LLC? If you open the SEP IRA in your SSN this question is likely irrelevant. 

 

Thanks