266136137 has 4 divisors (see below), whose sum is σ = 271798656. Its totient is φ = 260473620.

The previous prime is 266136119. The next prime is 266136191. The reversal of 266136137 is 731631662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 266136137 - 2¹⁴ = 266119753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266136097 and 266136106.

It is not an unprimeable number, because it can be changed into a prime (266136737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2831189 + ... + 2831282.

It is an arithmetic number, because the mean of its divisors is an integer number (67949664).

Almost surely, 2^266136137 is an apocalyptic number.

It is an amenable number.

266136137 is a deficient number, since it is larger than the sum of its proper divisors (5662519).

266136137 is an equidigital number, since it uses as much as digits as its factorization.

266136137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5662518.

The product of its digits is 27216, while the sum is 35.

The square root of 266136137 is about 16313.6794439513. The cubic root of 266136137 is about 643.2324557182.

Adding to 266136137 its reverse (731631662), we get a palindrome (997767799).

The spelling of 266136137 in words is "two hundred sixty-six million, one hundred thirty-six thousand, one hundred thirty-seven".