266228813867 has 2 divisors, whose sum is σ = 266228813868. Its totient is φ = 266228813866.

The previous prime is 266228813861. The next prime is 266228813881. The reversal of 266228813867 is 768318822662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266228813867 - 2⁸ = 266228813611 is a prime.

It is not a weakly prime, because it can be changed into another prime (266228813861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133114406933 + 133114406934.

It is an arithmetic number, because the mean of its divisors is an integer number (133114406934).

Almost surely, 2^266228813867 is an apocalyptic number.

266228813867 is a deficient number, since it is larger than the sum of its proper divisors (1).

266228813867 is an equidigital number, since it uses as much as digits as its factorization.

266228813867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18579456, while the sum is 59.

The spelling of 266228813867 in words is "two hundred sixty-six billion, two hundred twenty-eight million, eight hundred thirteen thousand, eight hundred sixty-seven".