27663666893 has 8 divisors (see below), whose sum is σ = 28050321600. Its totient is φ = 27277220448.

The previous prime is 27663666889. The next prime is 27663666941. The reversal of 27663666893 is 39866636672.

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 27663666893 - 2² = 27663666889 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27663666193) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 225728 + ... + 326006.

It is an arithmetic number, because the mean of its divisors is an integer number (3506290200).

Almost surely, 2^27663666893 is an apocalyptic number.

It is an amenable number.

27663666893 is a deficient number, since it is larger than the sum of its proper divisors (386654707).

27663666893 is a wasteful number, since it uses less digits than its factorization.

27663666893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104131.

The product of its digits is 70543872, while the sum is 62.

The spelling of 27663666893 in words is "twenty-seven billion, six hundred sixty-three million, six hundred sixty-six thousand, eight hundred ninety-three".