168892579646893 has 2 divisors, whose sum is σ = 168892579646894. Its totient is φ = 168892579646892.

The previous prime is 168892579646839. The next prime is 168892579646951. The reversal of 168892579646893 is 398646975298861.

Together with previous prime (168892579646839) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165024289207684 + 3868290439209 = 12846178^2 + 1966797^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168892579646893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168892579646798 and 168892579646807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168892579646803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84446289823446 + 84446289823447.

It is an arithmetic number, because the mean of its divisors is an integer number (84446289823447).

Almost surely, 2^{168892579646893} is an apocalyptic number.

It is an amenable number.

168892579646893 is a deficient number, since it is larger than the sum of its proper divisors (1).

168892579646893 is an equidigital number, since it uses as much as digits as its factorization.

168892579646893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67722117120, while the sum is 91.

The spelling of 168892579646893 in words is "one hundred sixty-eight trillion, eight hundred ninety-two billion, five hundred seventy-nine million, six hundred forty-six thousand, eight hundred ninety-three".