11665531233636 has 24 divisors (see below), whose sum is σ = 31108083289920. Its totient is φ = 3333008923872.

The previous prime is 11665531233571. The next prime is 11665531233637. The reversal of 11665531233636 is 63633213556611.

It is not an unprimeable number, because it can be changed into a prime (11665531233637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69437685831 + ... + 69437685998.

It is an arithmetic number, because the mean of its divisors is an integer number (1296170137080).

Almost surely, 2^{11665531233636} is an apocalyptic number.

It is an amenable number.

11665531233636 is an abundant number, since it is smaller than the sum of its proper divisors (19442552056284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11665531233636 is a wasteful number, since it uses less digits than its factorization.

11665531233636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138875371843 (or 138875371841 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 51.

The spelling of 11665531233636 in words is "eleven trillion, six hundred sixty-five billion, five hundred thirty-one million, two hundred thirty-three thousand, six hundred thirty-six".