128008181727211 has 2 divisors, whose sum is σ = 128008181727212. Its totient is φ = 128008181727210.

The previous prime is 128008181727163. The next prime is 128008181727233. The reversal of 128008181727211 is 112727181800821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128008181727211 - 2¹⁵ = 128008181694443 is a prime.

It is not a weakly prime, because it can be changed into another prime (128008181727611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64004090863605 + 64004090863606.

It is an arithmetic number, because the mean of its divisors is an integer number (64004090863606).

Almost surely, 2^{128008181727211} is an apocalyptic number.

128008181727211 is a deficient number, since it is larger than the sum of its proper divisors (1).

128008181727211 is an equidigital number, since it uses as much as digits as its factorization.

128008181727211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200704, while the sum is 49.

The spelling of 128008181727211 in words is "one hundred twenty-eight trillion, eight billion, one hundred eighty-one million, seven hundred twenty-seven thousand, two hundred eleven".