266894777063 has 2 divisors, whose sum is σ = 266894777064. Its totient is φ = 266894777062.

The previous prime is 266894777053. The next prime is 266894777117. The reversal of 266894777063 is 360777498662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266894777063 - 2¹⁶ = 266894711527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266894777053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133447388531 + 133447388532.

It is an arithmetic number, because the mean of its divisors is an integer number (133447388532).

Almost surely, 2^266894777063 is an apocalyptic number.

266894777063 is a deficient number, since it is larger than the sum of its proper divisors (1).

266894777063 is an equidigital number, since it uses as much as digits as its factorization.

266894777063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128024064, while the sum is 65.

The spelling of 266894777063 in words is "two hundred sixty-six billion, eight hundred ninety-four million, seven hundred seventy-seven thousand, sixty-three".