13104401252521 has 4 divisors (see below), whose sum is σ = 13145740058052. Its totient is φ = 13063062446992.

The previous prime is 13104401252489. The next prime is 13104401252597. The reversal of 13104401252521 is 12525210440131.

13104401252521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2730462112921 + 10373939139600 = 1652411^2 + 3220860^2 .

It is a cyclic number.

It is not a de Polignac number, because 13104401252521 - 2⁵ = 13104401252489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13104401258521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20669402290 + ... + 20669402923.

It is an arithmetic number, because the mean of its divisors is an integer number (3286435014513).

Almost surely, 2^{13104401252521} is an apocalyptic number.

It is an amenable number.

13104401252521 is a deficient number, since it is larger than the sum of its proper divisors (41338805531).

13104401252521 is an equidigital number, since it uses as much as digits as its factorization.

13104401252521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41338805530.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 13104401252521 its reverse (12525210440131), we get a palindrome (25629611692652).

The spelling of 13104401252521 in words is "thirteen trillion, one hundred four billion, four hundred one million, two hundred fifty-two thousand, five hundred twenty-one".