13204052540 has 96 divisors (see below), whose sum is σ = 32507260800. Its totient is φ = 4503195648.

The previous prime is 13204052531. The next prime is 13204052597. The reversal of 13204052540 is 4525040231.

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, 1318994 + ... + 1328966.

It is an arithmetic number, because the mean of its divisors is an integer number (338617300).

Almost surely, 2^13204052540 is an apocalyptic number.

13204052540 is a gapful number since it is divisible by the number (10) 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 13204052540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16253630400).

13204052540 is an abundant number, since it is smaller than the sum of its proper divisors (19303208260).

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

13204052540 is a wasteful number, since it uses less digits than its factorization.

13204052540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10196 (or 10180 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 13204052540 its reverse (4525040231), we get a palindrome (17729092771).

The spelling of 13204052540 in words is "thirteen billion, two hundred four million, fifty-two thousand, five hundred forty".