27663600947 has 2 divisors, whose sum is σ = 27663600948. Its totient is φ = 27663600946.

The previous prime is 27663600929. The next prime is 27663600949. The reversal of 27663600947 is 74900636672.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27663600947 - 2⁸ = 27663600691 is a prime.

Together with 27663600949, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 27663600895 and 27663600904.

It is not a weakly prime, because it can be changed into another prime (27663600949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13831800473 + 13831800474.

It is an arithmetic number, because the mean of its divisors is an integer number (13831800474).

Almost surely, 2^27663600947 is an apocalyptic number.

27663600947 is a deficient number, since it is larger than the sum of its proper divisors (1).

27663600947 is an equidigital number, since it uses as much as digits as its factorization.

27663600947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 50.

The spelling of 27663600947 in words is "twenty-seven billion, six hundred sixty-three million, six hundred thousand, nine hundred forty-seven".