128843711 has 2 divisors, whose sum is σ = 128843712. Its totient is φ = 128843710.

The previous prime is 128843683. The next prime is 128843717. The reversal of 128843711 is 117348821.

It is a strong prime.

It is an emirp because it is prime and its reverse (117348821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128843711 - 2¹⁴ = 128827327 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128843717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64421855 + 64421856.

It is an arithmetic number, because the mean of its divisors is an integer number (64421856).

Almost surely, 2^128843711 is an apocalyptic number.

128843711 is a deficient number, since it is larger than the sum of its proper divisors (1).

128843711 is an equidigital number, since it uses as much as digits as its factorization.

128843711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 35.

The square root of 128843711 is about 11350.9343668264. The cubic root of 128843711 is about 505.0732972065.

The spelling of 128843711 in words is "one hundred twenty-eight million, eight hundred forty-three thousand, seven hundred eleven".