The oldest animal on earth is A Giant Tortoise named Jonathan who was born in 1832.
Other oldest animals on earth are the Brachiopod, Horse, Primate, Asian Elephant, Platypus, Elephant, Monkey and the Whale.
The largest blue whale on record was a female blue whale that was hunted in the Southern Ocean, Antarctica on March 20th 1947 and weighed a whopping 418,878 lbs.
An average blue whale weighs 160 tons or as much as 25 African adult elephants.
Whales do not eat humans as they cannot physically eat a human.
While whiles can attack humans and have the whale does not have a large enough throat to swallow a human and they would have to chew them up in small enough pieces.
Whales will rarely attack humans to begin with.
Although a whale is pretty big and has a pretty big mouth they could not actually swallow something too big.
A Whales mouth might be large but the whales throat where it swallows things and food is about the size of a small salad plate.
The biggest thing that a whale could actually swallow would be a grapefruit or anything the size of a grapefruit.
If whatever it is that the whale is trying to swallow is larger than a grapefruit then they would not be able to swallow it.
I've heard of cases and stories where whales swallowed a human but that would actually be impossible and if you did get swallowed by a whale you would likely die due to the digestive acid in the whales stomach.
There was a story about some guy being swallowed by a whale years ago and supposedly lived to tell the tale but I believe that's all it was is a tale which was made up.
Unless that whale had a huge throat then a human would not be able to get down the whales throat.