27747708739 has 2 divisors, whose sum is σ = 27747708740. Its totient is φ = 27747708738.

The previous prime is 27747708719. The next prime is 27747708743. The reversal of 27747708739 is 93780774772.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27747708739 - 2²¹ = 27745611587 is a prime.

It is not a weakly prime, because it can be changed into another prime (27747708719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13873854369 + 13873854370.

It is an arithmetic number, because the mean of its divisors is an integer number (13873854370).

Almost surely, 2^27747708739 is an apocalyptic number.

27747708739 is a deficient number, since it is larger than the sum of its proper divisors (1).

27747708739 is an equidigital number, since it uses as much as digits as its factorization.

27747708739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29042496, while the sum is 61.

The spelling of 27747708739 in words is "twenty-seven billion, seven hundred forty-seven million, seven hundred eight thousand, seven hundred thirty-nine".