128329793211 has 4 divisors (see below), whose sum is σ = 171106390952. Its totient is φ = 85553195472.

The previous prime is 128329793167. The next prime is 128329793227. The reversal of 128329793211 is 112397923821.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 128329793211 - 2²⁷ = 128195575483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128329793411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21388298866 + ... + 21388298871.

It is an arithmetic number, because the mean of its divisors is an integer number (42776597738).

Almost surely, 2^128329793211 is an apocalyptic number.

128329793211 is a deficient number, since it is larger than the sum of its proper divisors (42776597741).

128329793211 is an equidigital number, since it uses as much as digits as its factorization.

128329793211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42776597740.

The product of its digits is 326592, while the sum is 48.

The spelling of 128329793211 in words is "one hundred twenty-eight billion, three hundred twenty-nine million, seven hundred ninety-three thousand, two hundred eleven".