27812000647 has 2 divisors, whose sum is σ = 27812000648. Its totient is φ = 27812000646.

The previous prime is 27812000617. The next prime is 27812000753. The reversal of 27812000647 is 74600021872.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27812000647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27812000617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13906000323 + 13906000324.

It is an arithmetic number, because the mean of its divisors is an integer number (13906000324).

Almost surely, 2^27812000647 is an apocalyptic number.

27812000647 is a deficient number, since it is larger than the sum of its proper divisors (1).

27812000647 is an equidigital number, since it uses as much as digits as its factorization.

27812000647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 37.

The spelling of 27812000647 in words is "twenty-seven billion, eight hundred twelve million, six hundred forty-seven", and thus it is an aban number.