13540145244 has 96 divisors (see below), whose sum is σ = 34098926400. Its totient is φ = 4166553600.

The previous prime is 13540145231. The next prime is 13540145279. The reversal of 13540145244 is 44254104531.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2242822 + ... + 2248850.

It is an arithmetic number, because the mean of its divisors is an integer number (355197150).

Almost surely, 2^13540145244 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 13540145244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17049463200).

13540145244 is an abundant number, since it is smaller than the sum of its proper divisors (20558781156).

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

13540145244 is a wasteful number, since it uses less digits than its factorization.

13540145244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6263 (or 6261 counting only the distinct ones).

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

Adding to 13540145244 its reverse (44254104531), we get a palindrome (57794249775).

The spelling of 13540145244 in words is "thirteen billion, five hundred forty million, one hundred forty-five thousand, two hundred forty-four".