999795568271 has 2 divisors, whose sum is σ = 999795568272. Its totient is φ = 999795568270.

The previous prime is 999795568253. The next prime is 999795568301. The reversal of 999795568271 is 172865597999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999795568271 - 2⁶ = 999795568207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999795568192 and 999795568201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999795268271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499897784135 + 499897784136.

It is an arithmetic number, because the mean of its divisors is an integer number (499897784136).

Almost surely, 2^999795568271 is an apocalyptic number.

999795568271 is a deficient number, since it is larger than the sum of its proper divisors (1).

999795568271 is an equidigital number, since it uses as much as digits as its factorization.

999795568271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 771573600, while the sum is 77.

The spelling of 999795568271 in words is "nine hundred ninety-nine billion, seven hundred ninety-five million, five hundred sixty-eight thousand, two hundred seventy-one".