266006665223506 has 8 divisors (see below), whose sum is σ = 400901040479664. Its totient is φ = 132372985063620.

The previous prime is 266006665223489. The next prime is 266006665223569. The reversal of 266006665223506 is 605322566600662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315173773540 + ... + 315173774383.

It is an arithmetic number, because the mean of its divisors is an integer number (50112630059958).

Almost surely, 2^{266006665223506} is an apocalyptic number.

266006665223506 is a deficient number, since it is larger than the sum of its proper divisors (134894375256158).

266006665223506 is a wasteful number, since it uses less digits than its factorization.

266006665223506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630347548136.

The product of its (nonzero) digits is 27993600, while the sum is 55.

The spelling of 266006665223506 in words is "two hundred sixty-six trillion, six billion, six hundred sixty-five million, two hundred twenty-three thousand, five hundred six".