27218430871 has 2 divisors, whose sum is σ = 27218430872. Its totient is φ = 27218430870.

The previous prime is 27218430857. The next prime is 27218430881. The reversal of 27218430871 is 17803481272.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27218430871 - 2⁹ = 27218430359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27218430881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13609215435 + 13609215436.

It is an arithmetic number, because the mean of its divisors is an integer number (13609215436).

Almost surely, 2^27218430871 is an apocalyptic number.

27218430871 is a deficient number, since it is larger than the sum of its proper divisors (1).

27218430871 is an equidigital number, since it uses as much as digits as its factorization.

27218430871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150528, while the sum is 43.

The spelling of 27218430871 in words is "twenty-seven billion, two hundred eighteen million, four hundred thirty thousand, eight hundred seventy-one".