168788887867 has 2 divisors, whose sum is σ = 168788887868. Its totient is φ = 168788887866.

The previous prime is 168788887837. The next prime is 168788887903. The reversal of 168788887867 is 768788887861.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168788887867 is a prime.

It is not a weakly prime, because it can be changed into another prime (168788887837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84394443933 + 84394443934.

It is an arithmetic number, because the mean of its divisors is an integer number (84394443934).

Almost surely, 2^168788887867 is an apocalyptic number.

168788887867 is a deficient number, since it is larger than the sum of its proper divisors (1).

168788887867 is an equidigital number, since it uses as much as digits as its factorization.

168788887867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3236954112, while the sum is 82.

The spelling of 168788887867 in words is "one hundred sixty-eight billion, seven hundred eighty-eight million, eight hundred eighty-seven thousand, eight hundred sixty-seven".