27793865663 has 8 divisors (see below), whose sum is σ = 27836276400. Its totient is φ = 27751483648.

The previous prime is 27793865657. The next prime is 27793865677. The reversal of 27793865663 is 36656839772.

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

It is a cyclic number.

It is not a de Polignac number, because 27793865663 - 2⁴ = 27793865647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27793865596 and 27793865605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27793865623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2613545 + ... + 2624157.

It is an arithmetic number, because the mean of its divisors is an integer number (3479534550).

Almost surely, 2^27793865663 is an apocalyptic number.

27793865663 is a deficient number, since it is larger than the sum of its proper divisors (42410737).

27793865663 is a wasteful number, since it uses less digits than its factorization.

27793865663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14361.

The product of its digits is 68584320, while the sum is 62.

The spelling of 27793865663 in words is "twenty-seven billion, seven hundred ninety-three million, eight hundred sixty-five thousand, six hundred sixty-three".