27643041688 has 32 divisors (see below), whose sum is σ = 52349360400. Its totient is φ = 13683382272.

The previous prime is 27643041677. The next prime is 27643041707. The reversal of 27643041688 is 88614034672.

It is a congruent number.

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, 1408648 + ... + 1428136.

Almost surely, 2^27643041688 is an apocalyptic number.

It is an amenable number.

27643041688 is a deficient number, since it is larger than the sum of its proper divisors (24706318712).

27643041688 is a wasteful number, since it uses less digits than its factorization.

27643041688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21259 (or 21255 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 27643041688 in words is "twenty-seven billion, six hundred forty-three million, forty-one thousand, six hundred eighty-eight".