168773379871 has 2 divisors, whose sum is σ = 168773379872. Its totient is φ = 168773379870.

The previous prime is 168773379869. The next prime is 168773379883. The reversal of 168773379871 is 178973377861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168773379871 - 2¹ = 168773379869 is a prime.

Together with 168773379869, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 168773379797 and 168773379806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168773374871) 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, 84386689935 + 84386689936.

It is an arithmetic number, because the mean of its divisors is an integer number (84386689936).

Almost surely, 2^168773379871 is an apocalyptic number.

168773379871 is a deficient number, since it is larger than the sum of its proper divisors (1).

168773379871 is an equidigital number, since it uses as much as digits as its factorization.

168773379871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74680704, while the sum is 67.

The spelling of 168773379871 in words is "one hundred sixty-eight billion, seven hundred seventy-three million, three hundred seventy-nine thousand, eight hundred seventy-one".