27747684043 has 2 divisors, whose sum is σ = 27747684044. Its totient is φ = 27747684042.

The previous prime is 27747684017. The next prime is 27747684067. The reversal of 27747684043 is 34048674772.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27747684043 is a prime.

It is not a weakly prime, because it can be changed into another prime (27747684143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13873842021 + 13873842022.

It is an arithmetic number, because the mean of its divisors is an integer number (13873842022).

Almost surely, 2^27747684043 is an apocalyptic number.

27747684043 is a deficient number, since it is larger than the sum of its proper divisors (1).

27747684043 is an equidigital number, since it uses as much as digits as its factorization.

27747684043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6322176, while the sum is 52.

The spelling of 27747684043 in words is "twenty-seven billion, seven hundred forty-seven million, six hundred eighty-four thousand, forty-three".