128964804394 has 16 divisors (see below), whose sum is σ = 200392020360. Its totient is φ = 62202807040.

The previous prime is 128964804389. The next prime is 128964804413. The reversal of 128964804394 is 493408469821.

It can be written as a sum of positive squares in 4 ways, for example, as 60522396169 + 68442408225 = 246013^2 + 261615^2 .

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, 8828329 + ... + 8842924.

Almost surely, 2^128964804394 is an apocalyptic number.

128964804394 is a deficient number, since it is larger than the sum of its proper divisors (71427215966).

128964804394 is a wasteful number, since it uses less digits than its factorization.

128964804394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17671385.

The product of its (nonzero) digits is 11943936, while the sum is 58.

The spelling of 128964804394 in words is "one hundred twenty-eight billion, nine hundred sixty-four million, eight hundred four thousand, three hundred ninety-four".