128511485 has 16 divisors (see below), whose sum is σ = 158008320. Its totient is φ = 100301760.

The previous prime is 128511451. The next prime is 128511527. The reversal of 128511485 is 584115821.

It is not a de Polignac number, because 128511485 - 2²² = 124317181 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 49346 + ... + 51884.

It is an arithmetic number, because the mean of its divisors is an integer number (9875520).

Almost surely, 2^128511485 is an apocalyptic number.

It is an amenable number.

128511485 is a deficient number, since it is larger than the sum of its proper divisors (29496835).

128511485 is a wasteful number, since it uses less digits than its factorization.

128511485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2788.

The product of its digits is 12800, while the sum is 35.

The square root of 128511485 is about 11336.2906190694. The cubic root of 128511485 is about 504.6388097934.

The spelling of 128511485 in words is "one hundred twenty-eight million, five hundred eleven thousand, four hundred eighty-five".