11585498871 has 16 divisors (see below), whose sum is σ = 15722887520. Its totient is φ = 7586248320.

The previous prime is 11585498819. The next prime is 11585498887. The reversal of 11585498871 is 17889458511.

It is a happy number.

It is not a de Polignac number, because 11585498871 - 2⁶ = 11585498807 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11585498671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85101 + ... + 174393.

It is an arithmetic number, because the mean of its divisors is an integer number (982680470).

Almost surely, 2^11585498871 is an apocalyptic number.

11585498871 is a deficient number, since it is larger than the sum of its proper divisors (4137388649).

11585498871 is an equidigital number, since it uses as much as digits as its factorization.

11585498871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90066.

The product of its digits is 3225600, while the sum is 57.

The spelling of 11585498871 in words is "eleven billion, five hundred eighty-five million, four hundred ninety-eight thousand, eight hundred seventy-one".