9566973873 has 24 divisors (see below), whose sum is σ = 14907927528. Its totient is φ = 5889541632.

The previous prime is 9566973869. The next prime is 9566973919. The reversal of 9566973873 is 3783796659.

It can be written as a sum of positive squares in 4 ways, for example, as 6327884304 + 3239089569 = 79548^2 + 56913^2 .

It is not a de Polignac number, because 9566973873 - 2² = 9566973869 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 9566973873.

It is not an unprimeable number, because it can be changed into a prime (9566973973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 581790 + ... + 598007.

It is an arithmetic number, because the mean of its divisors is an integer number (621163647).

Almost surely, 2^9566973873 is an apocalyptic number.

It is an amenable number.

9566973873 is a deficient number, since it is larger than the sum of its proper divisors (5340953655).

9566973873 is a wasteful number, since it uses less digits than its factorization.

9566973873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179873 (or 1179870 counting only the distinct ones).

The product of its digits is 51438240, while the sum is 63.

The square root of 9566973873 is about 97810.9087627755. The cubic root of 9566973873 is about 2122.8771509078.

The spelling of 9566973873 in words is "nine billion, five hundred sixty-six million, nine hundred seventy-three thousand, eight hundred seventy-three".