128364322720804 has 27 divisors (see below), whose sum is σ = 224826597062193. Its totient is φ = 64128197532528.

The previous prime is 128364322720789. The next prime is 128364322720841. The reversal of 128364322720804 is 408027223463821.

It is a happy number.

The square root of 128364322720804 is 11329798.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 64438669116900 + 63925653603904 = 8027370^2 + 7995352^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 51822494814 + ... + 51822497290.

Almost surely, 2^{128364322720804} is an apocalyptic number.

128364322720804 is the 11329798-th square number.

It is an amenable number.

128364322720804 is a deficient number, since it is larger than the sum of its proper divisors (96462274341389).

128364322720804 is an frugal number, since it uses more digits than its factorization.

128364322720804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9532 (or 4766 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 52.

The spelling of 128364322720804 in words is "one hundred twenty-eight trillion, three hundred sixty-four billion, three hundred twenty-two million, seven hundred twenty thousand, eight hundred four".