80168406317 has 2 divisors, whose sum is σ = 80168406318. Its totient is φ = 80168406316.

The previous prime is 80168406209. The next prime is 80168406323. The reversal of 80168406317 is 71360486108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62269712521 + 17898693796 = 249539^2 + 133786^2 .

It is a cyclic number.

It is not a de Polignac number, because 80168406317 - 2²⁴ = 80151629101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80168406397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40084203158 + 40084203159.

It is an arithmetic number, because the mean of its divisors is an integer number (40084203159).

Almost surely, 2^80168406317 is an apocalyptic number.

It is an amenable number.

80168406317 is a deficient number, since it is larger than the sum of its proper divisors (1).

80168406317 is an equidigital number, since it uses as much as digits as its factorization.

80168406317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 80168406317 in words is "eighty billion, one hundred sixty-eight million, four hundred six thousand, three hundred seventeen".