777267494897 has 2 divisors, whose sum is σ = 777267494898. Its totient is φ = 777267494896.

The previous prime is 777267494873. The next prime is 777267494917. The reversal of 777267494897 is 798494762777.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 761010224881 + 16257270016 = 872359^2 + 127504^2 .

It is a cyclic number.

It is not a de Polignac number, because 777267494897 - 2²⁴ = 777250717681 is a prime.

It is not a weakly prime, because it can be changed into another prime (777267494827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388633747448 + 388633747449.

It is an arithmetic number, because the mean of its divisors is an integer number (388633747449).

Almost surely, 2^777267494897 is an apocalyptic number.

It is an amenable number.

777267494897 is a deficient number, since it is larger than the sum of its proper divisors (1).

777267494897 is an equidigital number, since it uses as much as digits as its factorization.

777267494897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2091059712, while the sum is 77.

The spelling of 777267494897 in words is "seven hundred seventy-seven billion, two hundred sixty-seven million, four hundred ninety-four thousand, eight hundred ninety-seven".