128120571843227 has 2 divisors, whose sum is σ = 128120571843228. Its totient is φ = 128120571843226.

The previous prime is 128120571843203. The next prime is 128120571843281. The reversal of 128120571843227 is 722348175021821.

It is a weak prime.

It is an emirp because it is prime and its reverse (722348175021821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128120571843227 - 2¹² = 128120571839131 is a prime.

It is not a weakly prime, because it can be changed into another prime (128120571840227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64060285921613 + 64060285921614.

It is an arithmetic number, because the mean of its divisors is an integer number (64060285921614).

Almost surely, 2^{128120571843227} is an apocalyptic number.

128120571843227 is a deficient number, since it is larger than the sum of its proper divisors (1).

128120571843227 is an equidigital number, since it uses as much as digits as its factorization.

128120571843227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3010560, while the sum is 53.

The spelling of 128120571843227 in words is "one hundred twenty-eight trillion, one hundred twenty billion, five hundred seventy-one million, eight hundred forty-three thousand, two hundred twenty-seven".