168876945793 has 2 divisors, whose sum is σ = 168876945794. Its totient is φ = 168876945792.

The previous prime is 168876945739. The next prime is 168876945799. The reversal of 168876945793 is 397549678861.

Together with previous prime (168876945739) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92395937089 + 76481008704 = 303967^2 + 276552^2 .

It is a cyclic number.

It is not a de Polignac number, because 168876945793 - 2²¹ = 168874848641 is a prime.

It is not a weakly prime, because it can be changed into another prime (168876945799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84438472896 + 84438472897.

It is an arithmetic number, because the mean of its divisors is an integer number (84438472897).

Almost surely, 2^168876945793 is an apocalyptic number.

It is an amenable number.

168876945793 is a deficient number, since it is larger than the sum of its proper divisors (1).

168876945793 is an equidigital number, since it uses as much as digits as its factorization.

168876945793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 548674560, while the sum is 73.

The spelling of 168876945793 in words is "one hundred sixty-eight billion, eight hundred seventy-six million, nine hundred forty-five thousand, seven hundred ninety-three".