It is a high credit limit but not unheard of. Personally I would not bring attention to it quite yet. Having too much credit extended to you (even if unused) can make issuers wary of issuing new credit lines, even if you have a high income.

I would wait a few months, check you credit report and reevaluate before it comes time to apply for another credit card. That will give time to allow your credit score to reflect the impact of this new line of credit. You can always call and ask for it to be reduced. I did that with my Bank of America World Perks card years ago. I didn't want or need 50k in credit so I had it rolled back quite a bit but not enough to crash my credit score for a reduction in available credit/utilization rate.