13111110444 has 24 divisors (see below), whose sum is σ = 30602835648. Its totient is φ = 4368906640.

The previous prime is 13111110443. The next prime is 13111110451. The reversal of 13111110444 is 44401111131.

It is a self number, because there is not a number n which added to its sum of digits gives 13111110444.

It is not an unprimeable number, because it can be changed into a prime (13111110443) 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 7 ways as a sum of consecutive naturals, for example, 145302 + ... + 217565.

It is an arithmetic number, because the mean of its divisors is an integer number (1275118152).

Almost surely, 2^13111110444 is an apocalyptic number.

It is an amenable number.

13111110444 is an abundant number, since it is smaller than the sum of its proper divisors (17491725204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13111110444 is a wasteful number, since it uses less digits than its factorization.

13111110444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365885 (or 365883 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 13111110444 its reverse (44401111131), we get a palindrome (57512221575).

The spelling of 13111110444 in words is "thirteen billion, one hundred eleven million, one hundred ten thousand, four hundred forty-four".