6636637132216 has 64 divisors (see below), whose sum is σ = 15320754086400. Its totient is φ = 2624550657408.

The previous prime is 6636637132199. The next prime is 6636637132277. The reversal of 6636637132216 is 6122317366366.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435301 + ... + 3669163.

It is an arithmetic number, because the mean of its divisors is an integer number (239386782600).

Almost surely, 2^{6636637132216} is an apocalyptic number.

It is an amenable number.

6636637132216 is an abundant number, since it is smaller than the sum of its proper divisors (8684116954184).

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

6636637132216 is a wasteful number, since it uses less digits than its factorization.

6636637132216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236708 (or 3236704 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 52.

The spelling of 6636637132216 in words is "six trillion, six hundred thirty-six billion, six hundred thirty-seven million, one hundred thirty-two thousand, two hundred sixteen".