128168611 has 2 divisors, whose sum is σ = 128168612. Its totient is φ = 128168610.

The previous prime is 128168597. The next prime is 128168669. The reversal of 128168611 is 116861821.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (116861821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128168611 is a prime.

It is not a weakly prime, because it can be changed into another prime (128168011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64084305 + 64084306.

It is an arithmetic number, because the mean of its divisors is an integer number (64084306).

Almost surely, 2^128168611 is an apocalyptic number.

128168611 is a deficient number, since it is larger than the sum of its proper divisors (1).

128168611 is an equidigital number, since it uses as much as digits as its factorization.

128168611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 34.

The square root of 128168611 is about 11321.1576704858. The cubic root of 128168611 is about 504.1896109343.

The spelling of 128168611 in words is "one hundred twenty-eight million, one hundred sixty-eight thousand, six hundred eleven".