11805170559 has 16 divisors (see below), whose sum is σ = 19372588032. Its totient is φ = 6226903008.

The previous prime is 11805170557. The next prime is 11805170567. The reversal of 11805170559 is 95507150811.

It is not a de Polignac number, because 11805170559 - 2¹ = 11805170557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11805170559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11805170557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21620919 + ... + 21621464.

It is an arithmetic number, because the mean of its divisors is an integer number (1210786752).

Almost surely, 2^11805170559 is an apocalyptic number.

11805170559 is a deficient number, since it is larger than the sum of its proper divisors (7567417473).

11805170559 is a wasteful number, since it uses less digits than its factorization.

11805170559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43242406.

The product of its (nonzero) digits is 63000, while the sum is 42.

The spelling of 11805170559 in words is "eleven billion, eight hundred five million, one hundred seventy thousand, five hundred fifty-nine".