12158208986017 has 2 divisors, whose sum is σ = 12158208986018. Its totient is φ = 12158208986016.

The previous prime is 12158208985999. The next prime is 12158208986029. The reversal of 12158208986017 is 71068980285121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7753083838096 + 4405125147921 = 2784436^2 + 2098839^2 .

It is a cyclic number.

It is not a de Polignac number, because 12158208986017 - 2²³ = 12158200597409 is a prime.

It is not a weakly prime, because it can be changed into another prime (12158208986047) 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, 6079104493008 + 6079104493009.

It is an arithmetic number, because the mean of its divisors is an integer number (6079104493009).

Almost surely, 2^{12158208986017} is an apocalyptic number.

It is an amenable number.

12158208986017 is a deficient number, since it is larger than the sum of its proper divisors (1).

12158208986017 is an equidigital number, since it uses as much as digits as its factorization.

12158208986017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3870720, while the sum is 58.

The spelling of 12158208986017 in words is "twelve trillion, one hundred fifty-eight billion, two hundred eight million, nine hundred eighty-six thousand, seventeen".