266541013 has 2 divisors, whose sum is σ = 266541014. Its totient is φ = 266541012.

The previous prime is 266540983. The next prime is 266541019. The reversal of 266541013 is 310145662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239104369 + 27436644 = 15463^2 + 5238^2 .

It is a cyclic number.

It is not a de Polignac number, because 266541013 - 2¹³ = 266532821 is a prime.

It is a super-2 number, since 2×266541013² = 142088223222132338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266541019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133270506 + 133270507.

It is an arithmetic number, because the mean of its divisors is an integer number (133270507).

Almost surely, 2^266541013 is an apocalyptic number.

It is an amenable number.

266541013 is a deficient number, since it is larger than the sum of its proper divisors (1).

266541013 is an equidigital number, since it uses as much as digits as its factorization.

266541013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 266541013 is about 16326.0838231341. The cubic root of 266541013 is about 643.5584761194.

Adding to 266541013 its reverse (310145662), we get a palindrome (576686675).

The spelling of 266541013 in words is "two hundred sixty-six million, five hundred forty-one thousand, thirteen".