9969433668481 has 27 divisors (see below), whose sum is σ = 11764588063683. Its totient is φ = 8423547397440.

The previous prime is 9969433668479. The next prime is 9969433668497. The reversal of 9969433668481 is 1848663349699.

The square root of 9969433668481 is 3157441.

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., 4577823972225 + 5391609696256 = 2139585^2 + 2321984^2 .

It is not a de Polignac number, because 9969433668481 - 2¹ = 9969433668479 is a prime.

It is a super-2 number, since 2×9969433668481² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9969433668398 and 9969433668407.

It is not an unprimeable number, because it can be changed into a prime (9969433668451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1569245001 + ... + 1569251353.

Almost surely, 2^{9969433668481} is an apocalyptic number.

9969433668481 is the 3157441-st square number.

9969433668481 is the 1578721-st centered octagonal number.

It is an amenable number.

9969433668481 is a deficient number, since it is larger than the sum of its proper divisors (1795154395202).

9969433668481 is an frugal number, since it uses more digits than its factorization.

9969433668481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12862 (or 6431 counting only the distinct ones).

The product of its digits is 1451188224, while the sum is 76.

The spelling of 9969433668481 in words is "nine trillion, nine hundred sixty-nine billion, four hundred thirty-three million, six hundred sixty-eight thousand, four hundred eighty-one".