9973545897 has 48 divisors (see below), whose sum is σ = 16357953024. Its totient is φ = 5380704000.

The previous prime is 9973545851. The next prime is 9973545899. The reversal of 9973545897 is 7985453799.

9973545897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9973545897 - 2⁸ = 9973545641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9973545899) 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 47 ways as a sum of consecutive naturals, for example, 160147 + ... + 213527.

It is an arithmetic number, because the mean of its divisors is an integer number (340790688).

Almost surely, 2^9973545897 is an apocalyptic number.

It is an amenable number.

9973545897 is a deficient number, since it is larger than the sum of its proper divisors (6384407127).

9973545897 is a wasteful number, since it uses less digits than its factorization.

9973545897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53470 (or 53463 counting only the distinct ones).

The product of its digits is 85730400, while the sum is 66.

The square root of 9973545897 is about 99867.6418916558. The cubic root of 9973545897 is about 2152.5332244194.

The spelling of 9973545897 in words is "nine billion, nine hundred seventy-three million, five hundred forty-five thousand, eight hundred ninety-seven".