11636585536 has 28 divisors (see below), whose sum is σ = 23192214220. Its totient is φ = 5792878080.

The previous prime is 11636585531. The next prime is 11636585539. The reversal of 11636585536 is 63558563611.

It can be written as a sum of positive squares in 2 ways, for example, as 11397697600 + 238887936 = 106760^2 + 15456^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11636585536.

It is not an unprimeable number, because it can be changed into a prime (11636585531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382335 + ... + 411646.

It is an arithmetic number, because the mean of its divisors is an integer number (828293365).

Almost surely, 2^11636585536 is an apocalyptic number.

11636585536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11636585536 is a deficient number, since it is larger than the sum of its proper divisors (11555628684).

11636585536 is an equidigital number, since it uses as much as digits as its factorization.

11636585536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794222 (or 794212 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 49.

The spelling of 11636585536 in words is "eleven billion, six hundred thirty-six million, five hundred eighty-five thousand, five hundred thirty-six".