13405144544 has 48 divisors (see below), whose sum is σ = 28801177776. Its totient is φ = 6091008000.

The previous prime is 13405144531. The next prime is 13405144547. The reversal of 13405144544 is 44544150431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13405144547) 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, 1296194 + ... + 1306494.

It is an arithmetic number, because the mean of its divisors is an integer number (600024537).

Almost surely, 2^13405144544 is an apocalyptic number.

It is an amenable number.

13405144544 is an abundant number, since it is smaller than the sum of its proper divisors (15396033232).

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

13405144544 is a wasteful number, since it uses less digits than its factorization.

13405144544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14019 (or 14011 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 13405144544 its reverse (44544150431), we get a palindrome (57949294975).

The spelling of 13405144544 in words is "thirteen billion, four hundred five million, one hundred forty-four thousand, five hundred forty-four".