266012321222143 has 4 divisors (see below), whose sum is σ = 266012460090760. Its totient is φ = 266012182353528.

The previous prime is 266012321222113. The next prime is 266012321222159. The reversal of 266012321222143 is 341222123210662.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266012321222143 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 (266012321222113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66520188 + ... + 70405681.

It is an arithmetic number, because the mean of its divisors is an integer number (66503115022690).

Almost surely, 2^{266012321222143} is an apocalyptic number.

266012321222143 is a deficient number, since it is larger than the sum of its proper divisors (138868617).

266012321222143 is a wasteful number, since it uses less digits than its factorization.

266012321222143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138868616.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 266012321222143 in words is "two hundred sixty-six trillion, twelve billion, three hundred twenty-one million, two hundred twenty-two thousand, one hundred forty-three".