128209373227 has 8 divisors (see below), whose sum is σ = 138679880976. Its totient is φ = 117825758112.

The previous prime is 128209373219. The next prime is 128209373351. The reversal of 128209373227 is 722373902821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128209373227 - 2³ = 128209373219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128209373527) 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 in 7 ways as a sum of consecutive naturals, for example, 21720088 + ... + 21725989.

It is an arithmetic number, because the mean of its divisors is an integer number (17334985122).

Almost surely, 2^128209373227 is an apocalyptic number.

128209373227 is a deficient number, since it is larger than the sum of its proper divisors (10470507749).

128209373227 is a wasteful number, since it uses less digits than its factorization.

128209373227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43446317.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 128209373227 in words is "one hundred twenty-eight billion, two hundred nine million, three hundred seventy-three thousand, two hundred twenty-seven".