266560366041 has 12 divisors (see below), whose sum is σ = 385164584532. Its totient is φ = 177645551616.

The previous prime is 266560366019. The next prime is 266560366081. The reversal of 266560366041 is 140663065662.

266560366041 is a `hidden beast` number, since 2 + 6 + 6 + 5 + 6 + 0 + 36 + 604 + 1 = 666.

266560366041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 111799953225 + 154760412816 = 334365^2 + 393396^2 .

It is not a de Polignac number, because 266560366041 - 2¹⁰ = 266560365017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (266560366001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5085736 + ... + 5137881.

It is an arithmetic number, because the mean of its divisors is an integer number (32097048711).

Almost surely, 2^266560366041 is an apocalyptic number.

It is an amenable number.

266560366041 is a deficient number, since it is larger than the sum of its proper divisors (118604218491).

266560366041 is a wasteful number, since it uses less digits than its factorization.

266560366041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10226520 (or 10226517 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 266560366041 in words is "two hundred sixty-six billion, five hundred sixty million, three hundred sixty-six thousand, forty-one".