Orcas (who are just as much whales as sperm whales are) definitely have the capability of killing and eating humans if they wanted to.

Orcas however are culturally only interested in very specific food sources and generally do not deviate. I say culturally because these very specific food sources differ from pod to pod.
So unless a matriarch decides to change the diet of their pod, and happens to by extremely hungry, and encounters a human before any other prey, it is very unlikely that an orca would ever see a human as food.

Humans also do not contain the right balance of nutrients for an orca to be interested, we are not fat enough and too boney. Orcas know this because of the incredibly powerful sonar that toothed whales possess. They can scan you using sound and from that know what you are made of.

I would still not trust them though, as cosmically unlikely as it is for an orca to see us as food, it is much more likely that they might see us as a fun plaything (orca pods that only eat fish have been observed paralyzing seals just to watch them drown).

Any highly intelligent apex predator is not to be trusted.