266136213 has 16 divisors (see below), whose sum is σ = 405812736. Its totient is φ = 151975920.

The previous prime is 266136203. The next prime is 266136251. The reversal of 266136213 is 312631662.

It is not a de Polignac number, because 266136213 - 2¹⁶ = 266070677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266136203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37270 + ... + 43832.

It is an arithmetic number, because the mean of its divisors is an integer number (25363296).

Almost surely, 2^266136213 is an apocalyptic number.

It is an amenable number.

266136213 is a deficient number, since it is larger than the sum of its proper divisors (139676523).

266136213 is a wasteful number, since it uses less digits than its factorization.

266136213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8504.

The product of its digits is 7776, while the sum is 30.

The square root of 266136213 is about 16313.6817732847. The cubic root of 266136213 is about 643.2325169470.

Adding to 266136213 its reverse (312631662), we get a palindrome (578767875).

The spelling of 266136213 in words is "two hundred sixty-six million, one hundred thirty-six thousand, two hundred thirteen".