9671578723 has 2 divisors, whose sum is σ = 9671578724. Its totient is φ = 9671578722.

The previous prime is 9671578711. The next prime is 9671578727. The reversal of 9671578723 is 3278751769.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9671578723 - 2⁹ = 9671578211 is a prime.

It is not a weakly prime, because it can be changed into another prime (9671578727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4835789361 + 4835789362.

It is an arithmetic number, because the mean of its divisors is an integer number (4835789362).

Almost surely, 2^9671578723 is an apocalyptic number.

9671578723 is a deficient number, since it is larger than the sum of its proper divisors (1).

9671578723 is an equidigital number, since it uses as much as digits as its factorization.

9671578723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4445280, while the sum is 55.

The square root of 9671578723 is about 98344.1849984024. The cubic root of 9671578723 is about 2130.5862686332.

The spelling of 9671578723 in words is "nine billion, six hundred seventy-one million, five hundred seventy-eight thousand, seven hundred twenty-three".