13144420344140 has 24 divisors (see below), whose sum is σ = 29056087077360. Its totient is φ = 4981043498688.

The previous prime is 13144420344091. The next prime is 13144420344161. The reversal of 13144420344140 is 4144302444131.

It is a self number, because there is not a number n which added to its sum of digits gives 13144420344140.

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, 17295289547 + ... + 17295290306.

It is an arithmetic number, because the mean of its divisors is an integer number (1210670294890).

Almost surely, 2^{13144420344140} is an apocalyptic number.

13144420344140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13144420344140 is an abundant number, since it is smaller than the sum of its proper divisors (15911666733220).

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

13144420344140 is a wasteful number, since it uses less digits than its factorization.

13144420344140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34590579881 (or 34590579879 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 35.

Adding to 13144420344140 its reverse (4144302444131), we get a palindrome (17288722788271).

The spelling of 13144420344140 in words is "thirteen trillion, one hundred forty-four billion, four hundred twenty million, three hundred forty-four thousand, one hundred forty".