266782223243 has 2 divisors, whose sum is σ = 266782223244.
Its totient is φ = 266782223242.
The previous prime is 266782223189. The next prime is 266782223381. The reversal of 266782223243 is 342322287662.
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-266782223243 is a prime.
It is not a weakly prime, because it can be changed into another prime (266782223443) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133391111621 + 133391111622.
It is an arithmetic number, because the mean of its divisors is an integer number (133391111622).
Almost surely, 2266782223243 is an apocalyptic number.
266782223243 is a deficient number, since it is larger than the sum of its proper divisors (1).
266782223243 is an equidigital number, since it uses as much as digits as its factorization.
266782223243 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 2322432, while the sum is 47.
The spelling of 266782223243 in words is "two hundred sixty-six billion, seven hundred eighty-two million, two hundred twenty-three thousand, two hundred forty-three".