128216628794 has 16 divisors (see below), whose sum is σ = 193320824928. Its totient is φ = 63777154032.

The previous prime is 128216628751. The next prime is 128216628833. The reversal of 128216628794 is 497826612821.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121484 + ... + 520760.

It is an arithmetic number, because the mean of its divisors is an integer number (12082551558).

Almost surely, 2^128216628794 is an apocalyptic number.

128216628794 is a deficient number, since it is larger than the sum of its proper divisors (65104196134).

128216628794 is a wasteful number, since it uses less digits than its factorization.

128216628794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400109.

The product of its digits is 4644864, while the sum is 56.

The spelling of 128216628794 in words is "one hundred twenty-eight billion, two hundred sixteen million, six hundred twenty-eight thousand, seven hundred ninety-four".