13404782666 has 16 divisors (see below), whose sum is σ = 22057647840. Its totient is φ = 6059041680.

The previous prime is 13404782641. The next prime is 13404782669. The reversal of 13404782666 is 66628740431.

13404782666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13404782666.

It is not an unprimeable number, because it can be changed into a prime (13404782669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1698041 + ... + 1705916.

It is an arithmetic number, because the mean of its divisors is an integer number (1378602990).

Almost surely, 2^13404782666 is an apocalyptic number.

13404782666 is a deficient number, since it is larger than the sum of its proper divisors (8652865174).

13404782666 is a wasteful number, since it uses less digits than its factorization.

13404782666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404149.

The product of its (nonzero) digits is 1161216, while the sum is 47.

The spelling of 13404782666 in words is "thirteen billion, four hundred four million, seven hundred eighty-two thousand, six hundred sixty-six".