266444242066 has 16 divisors (see below), whose sum is σ = 402852777984. Its totient is φ = 132160188384.

The previous prime is 266444242063. The next prime is 266444242073. The reversal of 266444242066 is 660242444662.

It is not an unprimeable number, because it can be changed into a prime (266444242061) 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 7 ways as a sum of consecutive naturals, for example, 2876166 + ... + 2967358.

It is an arithmetic number, because the mean of its divisors is an integer number (25178298624).

Almost surely, 2^266444242066 is an apocalyptic number.

266444242066 is a deficient number, since it is larger than the sum of its proper divisors (136408535918).

266444242066 is a wasteful number, since it uses less digits than its factorization.

266444242066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102825.

The product of its (nonzero) digits is 2654208, while the sum is 46.

The spelling of 266444242066 in words is "two hundred sixty-six billion, four hundred forty-four million, two hundred forty-two thousand, sixty-six".