27663600949 has 2 divisors, whose sum is σ = 27663600950. Its totient is φ = 27663600948.

The previous prime is 27663600947. The next prime is 27663600973. The reversal of 27663600949 is 94900636672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20375564049 + 7288036900 = 142743^2 + 85370^2 .

It is a cyclic number.

It is not a de Polignac number, because 27663600949 - 2¹ = 27663600947 is a prime.

Together with 27663600947, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 27663600896 and 27663600905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27663600947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13831800474 + 13831800475.

It is an arithmetic number, because the mean of its divisors is an integer number (13831800475).

Almost surely, 2^27663600949 is an apocalyptic number.

It is an amenable number.

27663600949 is a deficient number, since it is larger than the sum of its proper divisors (1).

27663600949 is an equidigital number, since it uses as much as digits as its factorization.

27663600949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 52.

The spelling of 27663600949 in words is "twenty-seven billion, six hundred sixty-three million, six hundred thousand, nine hundred forty-nine".