9166555459157 has 2 divisors, whose sum is σ = 9166555459158. Its totient is φ = 9166555459156.

The previous prime is 9166555459147. The next prime is 9166555459241. The reversal of 9166555459157 is 7519545556619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8249814318001 + 916741141156 = 2872249^2 + 957466^2 .

It is a cyclic number.

It is not a de Polignac number, because 9166555459157 - 2²⁴ = 9166538681941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9166555459147) 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 as a sum of consecutive naturals, namely, 4583277729578 + 4583277729579.

It is an arithmetic number, because the mean of its divisors is an integer number (4583277729579).

Almost surely, 2^{9166555459157} is an apocalyptic number.

It is an amenable number.

9166555459157 is a deficient number, since it is larger than the sum of its proper divisors (1).

9166555459157 is an equidigital number, since it uses as much as digits as its factorization.

9166555459157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 255150000, while the sum is 68.

The spelling of 9166555459157 in words is "nine trillion, one hundred sixty-six billion, five hundred fifty-five million, four hundred fifty-nine thousand, one hundred fifty-seven".