1691313332171 has 2 divisors, whose sum is σ = 1691313332172. Its totient is φ = 1691313332170.

The previous prime is 1691313332119. The next prime is 1691313332273. The reversal of 1691313332171 is 1712333131961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1691313332171 - 2²⁶ = 1691246223307 is a prime.

It is not a weakly prime, because it can be changed into another prime (1691313332101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845656666085 + 845656666086.

It is an arithmetic number, because the mean of its divisors is an integer number (845656666086).

Almost surely, 2^{1691313332171} is an apocalyptic number.

1691313332171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1691313332171 is an equidigital number, since it uses as much as digits as its factorization.

1691313332171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 41.

The spelling of 1691313332171 in words is "one trillion, six hundred ninety-one billion, three hundred thirteen million, three hundred thirty-two thousand, one hundred seventy-one".