8271320413 has 2 divisors, whose sum is σ = 8271320414. Its totient is φ = 8271320412.

The previous prime is 8271320399. The next prime is 8271320501. The reversal of 8271320413 is 3140231728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4875111684 + 3396208729 = 69822^2 + 58277^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8271320413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8271320713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4135660206 + 4135660207.

It is an arithmetic number, because the mean of its divisors is an integer number (4135660207).

Almost surely, 2^8271320413 is an apocalyptic number.

It is an amenable number.

8271320413 is a deficient number, since it is larger than the sum of its proper divisors (1).

8271320413 is an equidigital number, since it uses as much as digits as its factorization.

8271320413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 8271320413 is about 90946.7999052193. The cubic root of 8271320413 is about 2022.3591374018.

The spelling of 8271320413 in words is "eight billion, two hundred seventy-one million, three hundred twenty thousand, four hundred thirteen".