11545585617 has 4 divisors (see below), whose sum is σ = 15394114160. Its totient is φ = 7697057076.

The previous prime is 11545585577. The next prime is 11545585637. The reversal of 11545585617 is 71658554511.

11545585617 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11545585617 - 2⁸ = 11545585361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11545585637) 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, 1924264267 + ... + 1924264272.

It is an arithmetic number, because the mean of its divisors is an integer number (3848528540).

Almost surely, 2^11545585617 is an apocalyptic number.

It is an amenable number.

11545585617 is a deficient number, since it is larger than the sum of its proper divisors (3848528543).

11545585617 is an equidigital number, since it uses as much as digits as its factorization.

11545585617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3848528542.

The product of its digits is 840000, while the sum is 48.

The spelling of 11545585617 in words is "eleven billion, five hundred forty-five million, five hundred eighty-five thousand, six hundred seventeen".