8520553986829 has 2 divisors, whose sum is σ = 8520553986830. Its totient is φ = 8520553986828.

The previous prime is 8520553986709. The next prime is 8520553986863. The reversal of 8520553986829 is 9286893550258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4390826884900 + 4129727101929 = 2095430^2 + 2032173^2 .

It is a cyclic number.

It is not a de Polignac number, because 8520553986829 - 2¹¹ = 8520553984781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8520553986899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4260276993414 + 4260276993415.

It is an arithmetic number, because the mean of its divisors is an integer number (4260276993415).

Almost surely, 2^{8520553986829} is an apocalyptic number.

It is an amenable number.

8520553986829 is a deficient number, since it is larger than the sum of its proper divisors (1).

8520553986829 is an equidigital number, since it uses as much as digits as its factorization.

8520553986829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248000, while the sum is 70.

The spelling of 8520553986829 in words is "eight trillion, five hundred twenty billion, five hundred fifty-three million, nine hundred eighty-six thousand, eight hundred twenty-nine".