13105440431344 has 20 divisors (see below), whose sum is σ = 25393582835896. Its totient is φ = 6552257764032.

The previous prime is 13105440431297. The next prime is 13105440431351. The reversal of 13105440431344 is 44313404450131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28669374 + ... + 29122909.

Almost surely, 2^{13105440431344} is an apocalyptic number.

It is an amenable number.

13105440431344 is a deficient number, since it is larger than the sum of its proper divisors (12288142404552).

13105440431344 is a wasteful number, since it uses less digits than its factorization.

13105440431344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57806464 (or 57806458 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 13105440431344 its reverse (44313404450131), we get a palindrome (57418844881475).

The spelling of 13105440431344 in words is "thirteen trillion, one hundred five billion, four hundred forty million, four hundred thirty-one thousand, three hundred forty-four".