27027818647 has 2 divisors, whose sum is σ = 27027818648. Its totient is φ = 27027818646.

The previous prime is 27027818621. The next prime is 27027818669. The reversal of 27027818647 is 74681872072.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27027818647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27027818594 and 27027818603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27027828647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13513909323 + 13513909324.

It is an arithmetic number, because the mean of its divisors is an integer number (13513909324).

Almost surely, 2^27027818647 is an apocalyptic number.

27027818647 is a deficient number, since it is larger than the sum of its proper divisors (1).

27027818647 is an equidigital number, since it uses as much as digits as its factorization.

27027818647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2107392, while the sum is 52.

The spelling of 27027818647 in words is "twenty-seven billion, twenty-seven million, eight hundred eighteen thousand, six hundred forty-seven".