818782807443 has 4 divisors (see below), whose sum is σ = 1091710409928. Its totient is φ = 545855204960.

The previous prime is 818782807441. The next prime is 818782807463. The reversal of 818782807443 is 344708287818.

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

It is a cyclic number.

It is not a de Polignac number, because 818782807443 - 2¹ = 818782807441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (818782807441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136463801238 + ... + 136463801243.

It is an arithmetic number, because the mean of its divisors is an integer number (272927602482).

Almost surely, 2^818782807443 is an apocalyptic number.

818782807443 is a deficient number, since it is larger than the sum of its proper divisors (272927602485).

818782807443 is a wasteful number, since it uses less digits than its factorization.

818782807443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272927602484.

The product of its (nonzero) digits is 19267584, while the sum is 60.

The spelling of 818782807443 in words is "eight hundred eighteen billion, seven hundred eighty-two million, eight hundred seven thousand, four hundred forty-three".