266740886135 has 4 divisors (see below), whose sum is σ = 320089063368. Its totient is φ = 213392708904.

The previous prime is 266740886131. The next prime is 266740886161. The reversal of 266740886135 is 531688047662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 266740886135 - 2² = 266740886131 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 (266740886131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26674088609 + ... + 26674088618.

It is an arithmetic number, because the mean of its divisors is an integer number (80022265842).

Almost surely, 2^266740886135 is an apocalyptic number.

266740886135 is a deficient number, since it is larger than the sum of its proper divisors (53348177233).

266740886135 is an equidigital number, since it uses as much as digits as its factorization.

266740886135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53348177232.

The product of its (nonzero) digits is 11612160, while the sum is 56.

The spelling of 266740886135 in words is "two hundred sixty-six billion, seven hundred forty million, eight hundred eighty-six thousand, one hundred thirty-five".