266894777117 has 2 divisors, whose sum is σ = 266894777118. Its totient is φ = 266894777116.

The previous prime is 266894777063. The next prime is 266894777129. The reversal of 266894777117 is 711777498662.

266894777117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265095235876 + 1799541241 = 514874^2 + 42421^2 .

It is a cyclic number.

It is not a de Polignac number, because 266894777117 - 2⁶ = 266894777053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266894777137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133447388558 + 133447388559.

It is an arithmetic number, because the mean of its divisors is an integer number (133447388559).

Almost surely, 2^266894777117 is an apocalyptic number.

It is an amenable number.

266894777117 is a deficient number, since it is larger than the sum of its proper divisors (1).

266894777117 is an equidigital number, since it uses as much as digits as its factorization.

266894777117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49787136, while the sum is 65.

The spelling of 266894777117 in words is "two hundred sixty-six billion, eight hundred ninety-four million, seven hundred seventy-seven thousand, one hundred seventeen".