8512214813 has 2 divisors, whose sum is σ = 8512214814. Its totient is φ = 8512214812.

The previous prime is 8512214801. The next prime is 8512214839. The reversal of 8512214813 is 3184122158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6143737924 + 2368476889 = 78382^2 + 48667^2 .

It is a cyclic number.

It is not a de Polignac number, because 8512214813 - 2²² = 8508020509 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8512213813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4256107406 + 4256107407.

It is an arithmetic number, because the mean of its divisors is an integer number (4256107407).

Almost surely, 2^8512214813 is an apocalyptic number.

It is an amenable number.

8512214813 is a deficient number, since it is larger than the sum of its proper divisors (1).

8512214813 is an equidigital number, since it uses as much as digits as its factorization.

8512214813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 35.

The square root of 8512214813 is about 92261.6649156084. The cubic root of 8512214813 is about 2041.8046645057.

The spelling of 8512214813 in words is "eight billion, five hundred twelve million, two hundred fourteen thousand, eight hundred thirteen".