168782111107 has 2 divisors, whose sum is σ = 168782111108. Its totient is φ = 168782111106.

The previous prime is 168782111093. The next prime is 168782111117. The reversal of 168782111107 is 701111287861.

It is a strong prime.

It is an emirp because it is prime and its reverse (701111287861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168782111107 - 2⁷ = 168782110979 is a prime.

It is not a weakly prime, because it can be changed into another prime (168782111117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84391055553 + 84391055554.

It is an arithmetic number, because the mean of its divisors is an integer number (84391055554).

Almost surely, 2^168782111107 is an apocalyptic number.

168782111107 is a deficient number, since it is larger than the sum of its proper divisors (1).

168782111107 is an equidigital number, since it uses as much as digits as its factorization.

168782111107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 43.

Adding to 168782111107 its reverse (701111287861), we get a palindrome (869893398968).

The spelling of 168782111107 in words is "one hundred sixty-eight billion, seven hundred eighty-two million, one hundred eleven thousand, one hundred seven".