13561026005 has 4 divisors (see below), whose sum is σ = 16273231212. Its totient is φ = 10848820800.

The previous prime is 13561025993. The next prime is 13561026007. The reversal of 13561026005 is 50062016531.

13561026005 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 9387090769 + 4173935236 = 96887^2 + 64606^2 .

It is not a de Polignac number, because 13561026005 - 2¹⁸ = 13560763861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13561026007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1356102596 + ... + 1356102605.

It is an arithmetic number, because the mean of its divisors is an integer number (4068307803).

Almost surely, 2^13561026005 is an apocalyptic number.

It is an amenable number.

13561026005 is a deficient number, since it is larger than the sum of its proper divisors (2712205207).

13561026005 is an equidigital number, since it uses as much as digits as its factorization.

13561026005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712205206.

The product of its (nonzero) digits is 5400, while the sum is 29.

The spelling of 13561026005 in words is "thirteen billion, five hundred sixty-one million, twenty-six thousand, five".