9156364643509 has 2 divisors, whose sum is σ = 9156364643510. Its totient is φ = 9156364643508.

The previous prime is 9156364643137. The next prime is 9156364643849. The reversal of 9156364643509 is 9053464636519.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5331582596484 + 3824782047025 = 2309022^2 + 1955705^2 .

It is an emirp because it is prime and its reverse (9053464636519) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9156364643509 - 2¹¹ = 9156364641461 is a prime.

It is a lonely number, since its distance to closest prime (9156364643849) sets a new record.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9156364643009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4578182321754 + 4578182321755.

It is an arithmetic number, because the mean of its divisors is an integer number (4578182321755).

Almost surely, 2^{9156364643509} is an apocalyptic number.

It is an amenable number.

9156364643509 is a deficient number, since it is larger than the sum of its proper divisors (1).

9156364643509 is an equidigital number, since it uses as much as digits as its factorization.

9156364643509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62985600, while the sum is 61.

The spelling of 9156364643509 in words is "nine trillion, one hundred fifty-six billion, three hundred sixty-four million, six hundred forty-three thousand, five hundred nine".