13667781443338 has 16 divisors (see below), whose sum is σ = 22371050655360. Its totient is φ = 6211075120000.

The previous prime is 13667781443221. The next prime is 13667781443347. The reversal of 13667781443338 is 83334418776631.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13667781443338.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 77550418 + ... + 77726461.

It is an arithmetic number, because the mean of its divisors is an integer number (1398190665960).

Almost surely, 2^{13667781443338} is an apocalyptic number.

13667781443338 is a deficient number, since it is larger than the sum of its proper divisors (8703269212022).

13667781443338 is a wasteful number, since it uses less digits than its factorization.

13667781443338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155280893.

The product of its digits is 146313216, while the sum is 64.

The spelling of 13667781443338 in words is "thirteen trillion, six hundred sixty-seven billion, seven hundred eighty-one million, four hundred forty-three thousand, three hundred thirty-eight".