27165421471 has 2 divisors, whose sum is σ = 27165421472. Its totient is φ = 27165421470.

The previous prime is 27165421433. The next prime is 27165421487. The reversal of 27165421471 is 17412456172.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27165421471 - 2²³ = 27157032863 is a prime.

It is a super-3 number, since 3×27165421471³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27165421421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13582710735 + 13582710736.

It is an arithmetic number, because the mean of its divisors is an integer number (13582710736).

Almost surely, 2^27165421471 is an apocalyptic number.

27165421471 is a deficient number, since it is larger than the sum of its proper divisors (1).

27165421471 is an equidigital number, since it uses as much as digits as its factorization.

27165421471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 40.

The spelling of 27165421471 in words is "twenty-seven billion, one hundred sixty-five million, four hundred twenty-one thousand, four hundred seventy-one".