11818530585 has 40 divisors (see below), whose sum is σ = 21280976640. Its totient is φ = 6274902816.

The previous prime is 11818530547. The next prime is 11818530589. The reversal of 11818530585 is 58503581811.

11818530585 is a `hidden beast` number, since 1 + 1 + 8 + 18 + 53 + 0 + 585 = 666.

It is not a de Polignac number, because 11818530585 - 2²⁸ = 11550095129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 11818530585.

It is not an unprimeable number, because it can be changed into a prime (11818530589) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24886 + ... + 155744.

It is an arithmetic number, because the mean of its divisors is an integer number (532024416).

Almost surely, 2^11818530585 is an apocalyptic number.

11818530585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11818530585 is a deficient number, since it is larger than the sum of its proper divisors (9462446055).

11818530585 is a wasteful number, since it uses less digits than its factorization.

11818530585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131099 (or 131090 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 45.

The spelling of 11818530585 in words is "eleven billion, eight hundred eighteen million, five hundred thirty thousand, five hundred eighty-five".