128964804389 has 2 divisors, whose sum is σ = 128964804390. Its totient is φ = 128964804388.

The previous prime is 128964804383. The next prime is 128964804413. The reversal of 128964804389 is 983408469821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118038283489 + 10926520900 = 343567^2 + 104530^2 .

It is an emirp because it is prime and its reverse (983408469821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128964804389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128964804383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64482402194 + 64482402195.

It is an arithmetic number, because the mean of its divisors is an integer number (64482402195).

Almost surely, 2^128964804389 is an apocalyptic number.

It is an amenable number.

128964804389 is a deficient number, since it is larger than the sum of its proper divisors (1).

128964804389 is an equidigital number, since it uses as much as digits as its factorization.

128964804389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23887872, while the sum is 62.

The spelling of 128964804389 in words is "one hundred twenty-eight billion, nine hundred sixty-four million, eight hundred four thousand, three hundred eighty-nine".