13356440544 has 24 divisors (see below), whose sum is σ = 35060656680. Its totient is φ = 4452146816.

The previous prime is 13356440543. The next prime is 13356440567. The reversal of 13356440544 is 44504465331.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13356440543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69564699 + ... + 69564890.

It is an arithmetic number, because the mean of its divisors is an integer number (1460860695).

Almost surely, 2^13356440544 is an apocalyptic number.

It is an amenable number.

13356440544 is an abundant number, since it is smaller than the sum of its proper divisors (21704216136).

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

13356440544 is a wasteful number, since it uses less digits than its factorization.

13356440544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139129602 (or 139129594 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 13356440544 in words is "thirteen billion, three hundred fifty-six million, four hundred forty thousand, five hundred forty-four".