266885022979 has 4 divisors (see below), whose sum is σ = 266889303720. Its totient is φ = 266880742240.

The previous prime is 266885022919. The next prime is 266885022997. The reversal of 266885022979 is 979220588662.

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 266885022979 - 2⁷ = 266885022851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 266885022979.

It is not an unprimeable number, because it can be changed into a prime (266885022919) 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, 2045449 + ... + 2172010.

It is an arithmetic number, because the mean of its divisors is an integer number (66722325930).

Almost surely, 2^266885022979 is an apocalyptic number.

266885022979 is a deficient number, since it is larger than the sum of its proper divisors (4280741).

266885022979 is an equidigital number, since it uses as much as digits as its factorization.

266885022979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4280740.

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 266885022979 in words is "two hundred sixty-six billion, eight hundred eighty-five million, twenty-two thousand, nine hundred seventy-nine".