266071133 has 2 divisors, whose sum is σ = 266071134. Its totient is φ = 266071132.

The previous prime is 266071129. The next prime is 266071187. The reversal of 266071133 is 331170662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244046884 + 22024249 = 15622^2 + 4693^2 .

It is a cyclic number.

It is not a de Polignac number, because 266071133 - 2² = 266071129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 266071096 and 266071105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266071103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133035566 + 133035567.

It is an arithmetic number, because the mean of its divisors is an integer number (133035567).

Almost surely, 2^266071133 is an apocalyptic number.

It is an amenable number.

266071133 is a deficient number, since it is larger than the sum of its proper divisors (1).

266071133 is an equidigital number, since it uses as much as digits as its factorization.

266071133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 266071133 is about 16311.6870065607. The cubic root of 266071133 is about 643.1800814111.

The spelling of 266071133 in words is "two hundred sixty-six million, seventy-one thousand, one hundred thirty-three".