13104522021505 has 4 divisors (see below), whose sum is σ = 15725426425812. Its totient is φ = 10483617617200.

The previous prime is 13104522021463. The next prime is 13104522021509. The reversal of 13104522021505 is 50512022540131.

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 6347371321201 + 6757150700304 = 2519399^2 + 2599452^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13104522021505 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13104522021509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1310452202146 + ... + 1310452202155.

It is an arithmetic number, because the mean of its divisors is an integer number (3931356606453).

Almost surely, 2^{13104522021505} is an apocalyptic number.

It is an amenable number.

13104522021505 is a deficient number, since it is larger than the sum of its proper divisors (2620904404307).

13104522021505 is an equidigital number, since it uses as much as digits as its factorization.

13104522021505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620904404306.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 13104522021505 its reverse (50512022540131), we get a palindrome (63616544561636).

The spelling of 13104522021505 in words is "thirteen trillion, one hundred four billion, five hundred twenty-two million, twenty-one thousand, five hundred five".