168500168653 has 2 divisors, whose sum is σ = 168500168654. Its totient is φ = 168500168652.

The previous prime is 168500168623. The next prime is 168500168687. The reversal of 168500168653 is 356861005861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166527654084 + 1972514569 = 408078^2 + 44413^2 .

It is a cyclic number.

It is not a de Polignac number, because 168500168653 - 2¹³ = 168500160461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168500168597 and 168500168606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168500168623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84250084326 + 84250084327.

It is an arithmetic number, because the mean of its divisors is an integer number (84250084327).

Almost surely, 2^168500168653 is an apocalyptic number.

It is an amenable number.

168500168653 is a deficient number, since it is larger than the sum of its proper divisors (1).

168500168653 is an equidigital number, since it uses as much as digits as its factorization.

168500168653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 168500168653 in words is "one hundred sixty-eight billion, five hundred million, one hundred sixty-eight thousand, six hundred fifty-three".