168518385143 has 2 divisors, whose sum is σ = 168518385144. Its totient is φ = 168518385142.

The previous prime is 168518385037. The next prime is 168518385157. The reversal of 168518385143 is 341583815861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168518385143 - 2¹⁰ = 168518384119 is a prime.

It is a super-2 number, since 2×168518385143² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168518382143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84259192571 + 84259192572.

It is an arithmetic number, because the mean of its divisors is an integer number (84259192572).

Almost surely, 2^168518385143 is an apocalyptic number.

168518385143 is a deficient number, since it is larger than the sum of its proper divisors (1).

168518385143 is an equidigital number, since it uses as much as digits as its factorization.

168518385143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2764800, while the sum is 53.

The spelling of 168518385143 in words is "one hundred sixty-eight billion, five hundred eighteen million, three hundred eighty-five thousand, one hundred forty-three".