168040746487 has 2 divisors, whose sum is σ = 168040746488. Its totient is φ = 168040746486.

The previous prime is 168040746451. The next prime is 168040746493. The reversal of 168040746487 is 784647040861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168040746487 - 2¹¹ = 168040744439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168040746437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84020373243 + 84020373244.

It is an arithmetic number, because the mean of its divisors is an integer number (84020373244).

Almost surely, 2^168040746487 is an apocalyptic number.

168040746487 is a deficient number, since it is larger than the sum of its proper divisors (1).

168040746487 is an equidigital number, since it uses as much as digits as its factorization.

168040746487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7225344, while the sum is 55.

The spelling of 168040746487 in words is "one hundred sixty-eight billion, forty million, seven hundred forty-six thousand, four hundred eighty-seven".