9973336647481 has 9 divisors (see below), whose sum is σ = 10025892431919. Its totient is φ = 9921054980736.

The previous prime is 9973336647433. The next prime is 9973336647563. The reversal of 9973336647481 is 1847466333799.

The square root of 9973336647481 is 3158059.

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., 2416423615225 + 7556913032256 = 1554485^2 + 2748984^2 .

It is not a de Polignac number, because 9973336647481 - 2³⁷ = 9835897694009 is a prime.

It is a super-2 number, since 2×9973336647481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9973336647481.

It is not an unprimeable number, because it can be changed into a prime (9973336647881) 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 8 ways as a sum of consecutive naturals, for example, 609497206 + ... + 609513568.

It is an arithmetic number, because the mean of its divisors is an integer number (1113988047991).

Almost surely, 2^{9973336647481} is an apocalyptic number.

9973336647481 is the 3158059-th square number.

9973336647481 is the 1579030-th centered octagonal number.

It is an amenable number.

9973336647481 is a deficient number, since it is larger than the sum of its proper divisors (52555784438).

9973336647481 is an frugal number, since it uses more digits than its factorization.

9973336647481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33112 (or 16556 counting only the distinct ones).

The product of its digits is 493807104, while the sum is 70.

The spelling of 9973336647481 in words is "nine trillion, nine hundred seventy-three billion, three hundred thirty-six million, six hundred forty-seven thousand, four hundred eighty-one".