13115344040144 has 20 divisors (see below), whose sum is σ = 25411912332996. Its totient is φ = 6557431180032.

The previous prime is 13115344040143. The next prime is 13115344040153. The reversal of 13115344040144 is 44104044351131.

It can be written as a sum of positive squares in 2 ways, for example, as 5983346503744 + 7131997536400 = 2446088^2 + 2670580^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13115344040143) 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 in 3 ways as a sum of consecutive naturals, for example, 14602829 + ... + 15474924.

Almost surely, 2^{13115344040144} is an apocalyptic number.

It is an amenable number.

13115344040144 is a deficient number, since it is larger than the sum of its proper divisors (12296568292852).

13115344040144 is a wasteful number, since it uses less digits than its factorization.

13115344040144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30105014 (or 30105008 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

Adding to 13115344040144 its reverse (44104044351131), we get a palindrome (57219388391275).

The spelling of 13115344040144 in words is "thirteen trillion, one hundred fifteen billion, three hundred forty-four million, forty thousand, one hundred forty-four".