6646554636612 has 24 divisors (see below), whose sum is σ = 16918502711712. Its totient is φ = 2014107465600.

The previous prime is 6646554636581. The next prime is 6646554636613. The reversal of 6646554636612 is 2166364556466.

It is not an unprimeable number, because it can be changed into a prime (6646554636613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25176343189 + ... + 25176343452.

It is an arithmetic number, because the mean of its divisors is an integer number (704937612988).

Almost surely, 2^{6646554636612} is an apocalyptic number.

It is an amenable number.

6646554636612 is an abundant number, since it is smaller than the sum of its proper divisors (10271948075100).

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

6646554636612 is a wasteful number, since it uses less digits than its factorization.

6646554636612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50352686659 (or 50352686657 counting only the distinct ones).

The product of its digits is 111974400, while the sum is 60.

The spelling of 6646554636612 in words is "six trillion, six hundred forty-six billion, five hundred fifty-four million, six hundred thirty-six thousand, six hundred twelve".