6649984339688 has 32 divisors (see below), whose sum is σ = 12756392611200. Its totient is φ = 3248528310912.

The previous prime is 6649984339627. The next prime is 6649984339697. The reversal of 6649984339688 is 8869334899466.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15327470 + ... + 15755357.

It is an arithmetic number, because the mean of its divisors is an integer number (398637269100).

Almost surely, 2^{6649984339688} is an apocalyptic number.

It is an amenable number.

6649984339688 is a deficient number, since it is larger than the sum of its proper divisors (6106408271512).

6649984339688 is a wasteful number, since it uses less digits than its factorization.

6649984339688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31083449 (or 31083445 counting only the distinct ones).

The product of its digits is 11609505792, while the sum is 83.

The spelling of 6649984339688 in words is "six trillion, six hundred forty-nine billion, nine hundred eighty-four million, three hundred thirty-nine thousand, six hundred eighty-eight".