128812103609764 has 27 divisors (see below), whose sum is σ = 225610861081473. Its totient is φ = 64351903140000.

The previous prime is 128812103609681. The next prime is 128812103609797. The reversal of 128812103609764 is 467906301218821.

The square root of 128812103609764 is 11349542.

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., 102171008164 + 128709932601600 = 319642^2 + 11345040^2 .

It is a super-2 number, since 2×128812103609764² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128812103609699 and 128812103609708.

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, 51095636824 + ... + 51095639344.

Almost surely, 2^{128812103609764} is an apocalyptic number.

128812103609764 is the 11349542-nd square number.

It is an amenable number.

128812103609764 is a deficient number, since it is larger than the sum of its proper divisors (96798757471709).

128812103609764 is an frugal number, since it uses more digits than its factorization.

128812103609764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9548 (or 4774 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 58.

The spelling of 128812103609764 in words is "one hundred twenty-eight trillion, eight hundred twelve billion, one hundred three million, six hundred nine thousand, seven hundred sixty-four".