13201445544 has 96 divisors (see below), whose sum is σ = 38415300480. Its totient is φ = 3769549056.

The previous prime is 13201445513. The next prime is 13201445549. The reversal of 13201445544 is 44554410231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13201445549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3251964 + ... + 3256020.

It is an arithmetic number, because the mean of its divisors is an integer number (400159380).

Almost surely, 2^13201445544 is an apocalyptic number.

13201445544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13201445544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19207650240).

13201445544 is an abundant number, since it is smaller than the sum of its proper divisors (25213854936).

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

13201445544 is a wasteful number, since it uses less digits than its factorization.

13201445544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6847 (or 6836 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 13201445544 its reverse (44554410231), we get a palindrome (57755855775).

The spelling of 13201445544 in words is "thirteen billion, two hundred one million, four hundred forty-five thousand, five hundred forty-four".