27647308663 has 4 divisors (see below), whose sum is σ = 29774024728. Its totient is φ = 25520592600.

The previous prime is 27647308657. The next prime is 27647308673. The reversal of 27647308663 is 36680374672.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27647308663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27647308663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27647308673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1063358013 + ... + 1063358038.

It is an arithmetic number, because the mean of its divisors is an integer number (7443506182).

Almost surely, 2^27647308663 is an apocalyptic number.

27647308663 is a deficient number, since it is larger than the sum of its proper divisors (2126716065).

27647308663 is a wasteful number, since it uses less digits than its factorization.

27647308663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126716064.

The product of its (nonzero) digits is 6096384, while the sum is 52.

The spelling of 27647308663 in words is "twenty-seven billion, six hundred forty-seven million, three hundred eight thousand, six hundred sixty-three".