First convert into number and then distribute it respectively as per d h mm ss
= Replace(Replace(Replace(Replace(Interval(Interval(Datetime1*86400,'dd hh:mm:ss')/24/60/60,'dd U hh V mm X ss Z'),'U', 'Day'),'V', 'Hour'),'X','minute'),'Z', 'sec')
I am getting the result as desired , please see the below screenshot -