2168320771 has 2 divisors, whose sum is σ = 2168320772. Its totient is φ = 2168320770.

The previous prime is 2168320753. The next prime is 2168320853. The reversal of 2168320771 is 1770238612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2168320771 - 2⁷ = 2168320643 is a prime.

It is a super-2 number, since 2×2168320771² = 9403229931900068882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2168320771.

It is not a weakly prime, because it can be changed into another prime (2168320751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084160385 + 1084160386.

It is an arithmetic number, because the mean of its divisors is an integer number (1084160386).

Almost surely, 2^2168320771 is an apocalyptic number.

2168320771 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168320771 is an equidigital number, since it uses as much as digits as its factorization.

2168320771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 2168320771 is about 46565.2313534465. The cubic root of 2168320771 is about 1294.3185536376.

The spelling of 2168320771 in words is "two billion, one hundred sixty-eight million, three hundred twenty thousand, seven hundred seventy-one".