128164055 has 4 divisors (see below), whose sum is σ = 153796872. Its totient is φ = 102531240.

The previous prime is 128164039. The next prime is 128164061. The reversal of 128164055 is 550461821.

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

It is not a de Polignac number, because 128164055 - 2⁴ = 128164039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12816401 + ... + 12816410.

It is an arithmetic number, because the mean of its divisors is an integer number (38449218).

Almost surely, 2^128164055 is an apocalyptic number.

128164055 is a deficient number, since it is larger than the sum of its proper divisors (25632817).

128164055 is an equidigital number, since it uses as much as digits as its factorization.

128164055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25632816.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 128164055 is about 11320.9564525264. The cubic root of 128164055 is about 504.1836367335.

It can be divided in two parts, 1281 and 64055, that multiplied together give a triangular number (82054455 = T₁₂₈₁₀).

The spelling of 128164055 in words is "one hundred twenty-eight million, one hundred sixty-four thousand, fifty-five".