266346034243 has 4 divisors (see below), whose sum is σ = 282013448040. Its totient is φ = 250678620448.

The previous prime is 266346034237. The next prime is 266346034247. The reversal of 266346034243 is 342430643662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342430643662 = 2 ⋅171215321831.

It is a cyclic number.

It is not a de Polignac number, because 266346034243 - 2⁹ = 266346033731 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 266346034243.

It is not an unprimeable number, because it can be changed into a prime (266346034247) 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, 7833706873 + ... + 7833706906.

It is an arithmetic number, because the mean of its divisors is an integer number (70503362010).

Almost surely, 2^266346034243 is an apocalyptic number.

266346034243 is a deficient number, since it is larger than the sum of its proper divisors (15667413797).

266346034243 is a wasteful number, since it uses less digits than its factorization.

266346034243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15667413796.

The product of its (nonzero) digits is 1492992, while the sum is 43.

The spelling of 266346034243 in words is "two hundred sixty-six billion, three hundred forty-six million, thirty-four thousand, two hundred forty-three".