168988199292863 has 2 divisors, whose sum is σ = 168988199292864. Its totient is φ = 168988199292862.

The previous prime is 168988199292851. The next prime is 168988199292893. The reversal of 168988199292863 is 368292991889861.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (368292991889861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168988199292863 - 2³⁰ = 168987125551039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168988199292833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84494099646431 + 84494099646432.

It is an arithmetic number, because the mean of its divisors is an integer number (84494099646432).

Almost surely, 2^{168988199292863} is an apocalyptic number.

168988199292863 is a deficient number, since it is larger than the sum of its proper divisors (1).

168988199292863 is an equidigital number, since it uses as much as digits as its factorization.

168988199292863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11609505792, while the sum is 89.

The spelling of 168988199292863 in words is "one hundred sixty-eight trillion, nine hundred eighty-eight billion, one hundred ninety-nine million, two hundred ninety-two thousand, eight hundred sixty-three".