Hi digitalrace
When you reach state pension age your ESA will stop, but you may be eligible to claim GPC;
www.gov.uk/pension-credit depending on your circumstances, such as savings and any other pension received such as occupation and private pensions.
You will still be eligible to claim your other benefits but the amount of HB and CTRS you receive may change slightly unless you receive GPC in which case you should receive full entitlement.
I would advise you to seek help from your local Welfare Rights Organisation as they can take all your circumstances into consideration;
advicelocal.uk Gary