13245135144 has 128 divisors (see below), whose sum is σ = 36592128000. Its totient is φ = 3978892800.

The previous prime is 13245135139. The next prime is 13245135173. The reversal of 13245135144 is 44153154231.

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, 826084 + ... + 841964.

It is an arithmetic number, because the mean of its divisors is an integer number (285876000).

Almost surely, 2^13245135144 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 13245135144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18296064000).

13245135144 is an abundant number, since it is smaller than the sum of its proper divisors (23346992856).

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

13245135144 is a wasteful number, since it uses less digits than its factorization.

13245135144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15999 (or 15995 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

Adding to 13245135144 its reverse (44153154231), we get a palindrome (57398289375).

The spelling of 13245135144 in words is "thirteen billion, two hundred forty-five million, one hundred thirty-five thousand, one hundred forty-four".