13144112240 has 40 divisors (see below), whose sum is σ = 34925785440. Its totient is φ = 4506552576.

The previous prime is 13144112089. The next prime is 13144112257. The reversal of 13144112240 is 4221144131.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11735255 + ... + 11736374.

It is an arithmetic number, because the mean of its divisors is an integer number (873144636).

Almost surely, 2^13144112240 is an apocalyptic number.

13144112240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13144112240 is an abundant number, since it is smaller than the sum of its proper divisors (21781673200).

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

13144112240 is a wasteful number, since it uses less digits than its factorization.

13144112240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23471649 (or 23471643 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 13144112240 its reverse (4221144131), we get a palindrome (17365256371).

The spelling of 13144112240 in words is "thirteen billion, one hundred forty-four million, one hundred twelve thousand, two hundred forty".