168740359187 has 2 divisors, whose sum is σ = 168740359188. Its totient is φ = 168740359186.

The previous prime is 168740359181. The next prime is 168740359231. The reversal of 168740359187 is 781953047861.

It is a weak prime.

It is an emirp because it is prime and its reverse (781953047861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168740359187 - 2⁴ = 168740359171 is a prime.

It is not a weakly prime, because it can be changed into another prime (168740359181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84370179593 + 84370179594.

It is an arithmetic number, because the mean of its divisors is an integer number (84370179594).

Almost surely, 2^168740359187 is an apocalyptic number.

168740359187 is a deficient number, since it is larger than the sum of its proper divisors (1).

168740359187 is an equidigital number, since it uses as much as digits as its factorization.

168740359187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 168740359187 in words is "one hundred sixty-eight billion, seven hundred forty million, three hundred fifty-nine thousand, one hundred eighty-seven".