128188105255 has 8 divisors (see below), whose sum is σ = 175800830112. Its totient is φ = 87900415008.

The previous prime is 128188105223. The next prime is 128188105271. The reversal of 128188105255 is 552501881821.

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

It is not a de Polignac number, because 128188105255 - 2⁵ = 128188105223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1831258612 + ... + 1831258681.

It is an arithmetic number, because the mean of its divisors is an integer number (21975103764).

Almost surely, 2^128188105255 is an apocalyptic number.

128188105255 is a deficient number, since it is larger than the sum of its proper divisors (47612724857).

128188105255 is an equidigital number, since it uses as much as digits as its factorization.

128188105255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3662517305.

The product of its (nonzero) digits is 256000, while the sum is 46.

The spelling of 128188105255 in words is "one hundred twenty-eight billion, one hundred eighty-eight million, one hundred five thousand, two hundred fifty-five".