128804105927 has 12 divisors (see below), whose sum is σ = 151943680656. Its totient is φ = 108848537280.

The previous prime is 128804105923. The next prime is 128804106031. The reversal of 128804105927 is 729501408821.

It is not a de Polignac number, because 128804105927 - 2² = 128804105923 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128804105923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18508178 + ... + 18515135.

It is an arithmetic number, because the mean of its divisors is an integer number (12661973388).

Almost surely, 2^128804105927 is an apocalyptic number.

128804105927 is a deficient number, since it is larger than the sum of its proper divisors (23139574729).

128804105927 is an equidigital number, since it uses as much as digits as its factorization.

128804105927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37023398 (or 37023391 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 128804105927 in words is "one hundred twenty-eight billion, eight hundred four million, one hundred five thousand, nine hundred twenty-seven".