11385328585 has 4 divisors (see below), whose sum is σ = 13662394308. Its totient is φ = 9108262864.

The previous prime is 11385328567. The next prime is 11385328651. The reversal of 11385328585 is 58582358311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58582358311 = 23 ⋅2547059057.

It can be written as a sum of positive squares in 2 ways, for example, as 5165009424 + 6220319161 = 71868^2 + 78869^2 .

It is a cyclic number.

It is not a de Polignac number, because 11385328585 - 2¹⁷ = 11385197513 is a prime.

It is a Smith number, since the sum of its digits (49) 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1138532854 + ... + 1138532863.

It is an arithmetic number, because the mean of its divisors is an integer number (3415598577).

Almost surely, 2^11385328585 is an apocalyptic number.

It is an amenable number.

11385328585 is a deficient number, since it is larger than the sum of its proper divisors (2277065723).

11385328585 is an equidigital number, since it uses as much as digits as its factorization.

11385328585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277065722.

The product of its digits is 1152000, while the sum is 49.

The spelling of 11385328585 in words is "eleven billion, three hundred eighty-five million, three hundred twenty-eight thousand, five hundred eighty-five".