168500168687 has 2 divisors, whose sum is σ = 168500168688. Its totient is φ = 168500168686.

The previous prime is 168500168653. The next prime is 168500168699. The reversal of 168500168687 is 786861005861.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168500168687 - 2⁶ = 168500168623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168500168887) 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, 84250084343 + 84250084344.

It is an arithmetic number, because the mean of its divisors is an integer number (84250084344).

Almost surely, 2^168500168687 is an apocalyptic number.

168500168687 is a deficient number, since it is larger than the sum of its proper divisors (1).

168500168687 is an equidigital number, since it uses as much as digits as its factorization.

168500168687 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 56.

The spelling of 168500168687 in words is "one hundred sixty-eight billion, five hundred million, one hundred sixty-eight thousand, six hundred eighty-seven".