216271981284179 has 2 divisors, whose sum is σ = 216271981284180. Its totient is φ = 216271981284178.

The previous prime is 216271981284157. The next prime is 216271981284181. The reversal of 216271981284179 is 971482189172612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216271981284179 - 2⁸ = 216271981283923 is a prime.

Together with 216271981284181, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (216271981281179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108135990642089 + 108135990642090.

It is an arithmetic number, because the mean of its divisors is an integer number (108135990642090).

Almost surely, 2^{216271981284179} is an apocalyptic number.

216271981284179 is a deficient number, since it is larger than the sum of its proper divisors (1).

216271981284179 is an equidigital number, since it uses as much as digits as its factorization.

216271981284179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48771072, while the sum is 68.

The spelling of 216271981284179 in words is "two hundred sixteen trillion, two hundred seventy-one billion, nine hundred eighty-one million, two hundred eighty-four thousand, one hundred seventy-nine".