It is a strong prime.
It is a cyclic number.
It is a congruent number.
Almost surely, 250778205401061 is an apocalyptic number.
It is an amenable number.
50778205401061 is an equidigital number, since it uses as much as digits as its factorization.
50778205401061 is an odious number, because the sum of its binary digits is odd.
Adding to 50778205401061 its reverse (16010450287705), we get a palindrome (66788655688766).
The spelling of 50778205401061 in words is "fifty trillion, seven hundred seventy-eight billion, two hundred five million, four hundred one thousand, sixty-one".