27747707387 has 2 divisors, whose sum is σ = 27747707388. Its totient is φ = 27747707386.

The previous prime is 27747707371. The next prime is 27747707441. The reversal of 27747707387 is 78370774772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27747707387 - 2⁴ = 27747707371 is a prime.

It is not a weakly prime, because it can be changed into another prime (27747707087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13873853693 + 13873853694.

It is an arithmetic number, because the mean of its divisors is an integer number (13873853694).

Almost surely, 2^27747707387 is an apocalyptic number.

27747707387 is a deficient number, since it is larger than the sum of its proper divisors (1).

27747707387 is an equidigital number, since it uses as much as digits as its factorization.

27747707387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22588608, while the sum is 59.

The spelling of 27747707387 in words is "twenty-seven billion, seven hundred forty-seven million, seven hundred seven thousand, three hundred eighty-seven".