128684004535 has 8 divisors (see below), whose sum is σ = 154758709296. Its totient is φ = 102721934400.

The previous prime is 128684004529. The next prime is 128684004569. The reversal of 128684004535 is 535400486821.

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

It is a de Polignac number, because none of the positive numbers 2^k-128684004535 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 7 ways as a sum of consecutive naturals, for example, 28156141 + ... + 28160710.

It is an arithmetic number, because the mean of its divisors is an integer number (19344838662).

Almost surely, 2^128684004535 is an apocalyptic number.

128684004535 is a deficient number, since it is larger than the sum of its proper divisors (26074704761).

128684004535 is an equidigital number, since it uses as much as digits as its factorization.

128684004535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56317313.

The product of its (nonzero) digits is 921600, while the sum is 46.

The spelling of 128684004535 in words is "one hundred twenty-eight billion, six hundred eighty-four million, four thousand, five hundred thirty-five".