9956544529 has 2 divisors, whose sum is σ = 9956544530. Its totient is φ = 9956544528.

The previous prime is 9956544527. The next prime is 9956544557. The reversal of 9956544529 is 9254456599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9384378129 + 572166400 = 96873^2 + 23920^2 .

It is a cyclic number.

It is not a de Polignac number, because 9956544529 - 2¹ = 9956544527 is a prime.

Together with 9956544527, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9956544523) 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, 4978272264 + 4978272265.

It is an arithmetic number, because the mean of its divisors is an integer number (4978272265).

Almost surely, 2^9956544529 is an apocalyptic number.

It is an amenable number.

9956544529 is a deficient number, since it is larger than the sum of its proper divisors (1).

9956544529 is an equidigital number, since it uses as much as digits as its factorization.

9956544529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496000, while the sum is 58.

The square root of 9956544529 is about 99782.4860834806. The cubic root of 9956544529 is about 2151.3094261839.

The spelling of 9956544529 in words is "nine billion, nine hundred fifty-six million, five hundred forty-four thousand, five hundred twenty-nine".