16636243243216 has 20 divisors (see below), whose sum is σ = 32247975831652. Its totient is φ = 8314184964096.

The previous prime is 16636243243201. The next prime is 16636243243313. The reversal of 16636243243216 is 61234234263661.

16636243243216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 558517075600 + 16077726167616 = 747340^2 + 4009704^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16636243243216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246006231 + ... + 246073846.

Almost surely, 2^{16636243243216} is an apocalyptic number.

16636243243216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16636243243216 is a deficient number, since it is larger than the sum of its proper divisors (15611732588436).

16636243243216 is a wasteful number, since it uses less digits than its factorization.

16636243243216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492082198 (or 492082192 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 49.

The spelling of 16636243243216 in words is "sixteen trillion, six hundred thirty-six billion, two hundred forty-three million, two hundred forty-three thousand, two hundred sixteen".