266158967 has 4 divisors (see below), whose sum is σ = 277731120. Its totient is φ = 254586816.

The previous prime is 266158961. The next prime is 266158993. The reversal of 266158967 is 769851662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 769851662 = 2 ⋅384925831.

It is not a de Polignac number, because 266158967 - 2⁶ = 266158903 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 (266158961) 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 3 ways as a sum of consecutive naturals, for example, 5786042 + ... + 5786087.

It is an arithmetic number, because the mean of its divisors is an integer number (69432780).

Almost surely, 2^266158967 is an apocalyptic number.

266158967 is a deficient number, since it is larger than the sum of its proper divisors (11572153).

266158967 is a wasteful number, since it uses less digits than its factorization.

266158967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11572152.

The product of its digits is 1088640, while the sum is 50.

The square root of 266158967 is about 16314.3791484690. The cubic root of 266158967 is about 643.2508480308.

The spelling of 266158967 in words is "two hundred sixty-six million, one hundred fifty-eight thousand, nine hundred sixty-seven".