266606140213 has 6 divisors (see below), whose sum is σ = 310133673366. Its totient is φ = 228519548712.

The previous prime is 266606140169. The next prime is 266606140253. The reversal of 266606140213 is 312041606662.

It can be written as a sum of positive squares in only one way, i.e., 220020097969 + 46586042244 = 469063^2 + 215838^2 .

It is not a de Polignac number, because 266606140213 - 2¹³ = 266606132021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266606140253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2720470770 + ... + 2720470867.

It is an arithmetic number, because the mean of its divisors is an integer number (51688945561).

Almost surely, 2^266606140213 is an apocalyptic number.

It is an amenable number.

266606140213 is a deficient number, since it is larger than the sum of its proper divisors (43527533153).

266606140213 is an equidigital number, since it uses as much as digits as its factorization.

266606140213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5440941651 (or 5440941644 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

Adding to 266606140213 its reverse (312041606662), we get a palindrome (578647746875).

The spelling of 266606140213 in words is "two hundred sixty-six billion, six hundred six million, one hundred forty thousand, two hundred thirteen".