128711505179 has 2 divisors, whose sum is σ = 128711505180. Its totient is φ = 128711505178.

The previous prime is 128711505163. The next prime is 128711505199. The reversal of 128711505179 is 971505117821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128711505179 - 2⁴ = 128711505163 is a prime.

It is not a weakly prime, because it can be changed into another prime (128711505149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64355752589 + 64355752590.

It is an arithmetic number, because the mean of its divisors is an integer number (64355752590).

Almost surely, 2^128711505179 is an apocalyptic number.

128711505179 is a deficient number, since it is larger than the sum of its proper divisors (1).

128711505179 is an equidigital number, since it uses as much as digits as its factorization.

128711505179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 176400, while the sum is 47.

The spelling of 128711505179 in words is "one hundred twenty-eight billion, seven hundred eleven million, five hundred five thousand, one hundred seventy-nine".