13440805168 has 80 divisors (see below), whose sum is σ = 30025131840. Its totient is φ = 5709570048.

The previous prime is 13440805139. The next prime is 13440805199. The reversal of 13440805168 is 86150804431.

It is a self number, because there is not a number n which added to its sum of digits gives 13440805168.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10426668 + ... + 10427956.

It is an arithmetic number, because the mean of its divisors is an integer number (375314148).

Almost surely, 2^13440805168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13440805168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15012565920).

13440805168 is an abundant number, since it is smaller than the sum of its proper divisors (16584326672).

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

13440805168 is a wasteful number, since it uses less digits than its factorization.

13440805168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054 (or 2048 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 13440805168 in words is "thirteen billion, four hundred forty million, eight hundred five thousand, one hundred sixty-eight".