13111443040 has 48 divisors (see below), whose sum is σ = 31696167888. Its totient is φ = 5122607616.

The previous prime is 13111442969. The next prime is 13111443041. The reversal of 13111443040 is 4034411131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111443041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945987 + ... + 959746.

It is an arithmetic number, because the mean of its divisors is an integer number (660336831).

Almost surely, 2^13111443040 is an apocalyptic number.

13111443040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13111443040 is an abundant number, since it is smaller than the sum of its proper divisors (18584724848).

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

13111443040 is a wasteful number, since it uses less digits than its factorization.

13111443040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905791 (or 1905783 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 13111443040 its reverse (4034411131), we get a palindrome (17145854171).

The spelling of 13111443040 in words is "thirteen billion, one hundred eleven million, four hundred forty-three thousand, forty".