266116453129 has 2 divisors, whose sum is σ = 266116453130. Its totient is φ = 266116453128.

The previous prime is 266116453117. The next prime is 266116453171. The reversal of 266116453129 is 921354611662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255060351225 + 11056101904 = 505035^2 + 105148^2 .

It is a cyclic number.

It is not a de Polignac number, because 266116453129 - 2¹⁷ = 266116322057 is a prime.

It is not a weakly prime, because it can be changed into another prime (266116453199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133058226564 + 133058226565.

It is an arithmetic number, because the mean of its divisors is an integer number (133058226565).

Almost surely, 2^266116453129 is an apocalyptic number.

It is an amenable number.

266116453129 is a deficient number, since it is larger than the sum of its proper divisors (1).

266116453129 is an equidigital number, since it uses as much as digits as its factorization.

266116453129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 46.

The spelling of 266116453129 in words is "two hundred sixty-six billion, one hundred sixteen million, four hundred fifty-three thousand, one hundred twenty-nine".