13646616646 has 8 divisors (see below), whose sum is σ = 22044534624. Its totient is φ = 6298438440.

The previous prime is 13646616631. The next prime is 13646616653. The reversal of 13646616646 is 64661664631.

13646616646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13646616646.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 262434910 + ... + 262434961.

It is an arithmetic number, because the mean of its divisors is an integer number (2755566828).

Almost surely, 2^13646616646 is an apocalyptic number.

13646616646 is a deficient number, since it is larger than the sum of its proper divisors (8397917978).

13646616646 is a wasteful number, since it uses less digits than its factorization.

13646616646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524869886.

The product of its digits is 2239488, while the sum is 49.

The spelling of 13646616646 in words is "thirteen billion, six hundred forty-six million, six hundred sixteen thousand, six hundred forty-six".