8502841520009 has 2 divisors, whose sum is σ = 8502841520010. Its totient is φ = 8502841520008.

The previous prime is 8502841519987. The next prime is 8502841520011. The reversal of 8502841520009 is 9000251482058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6028424431225 + 2474417088784 = 2455285^2 + 1573028^2 .

It is a cyclic number.

It is not a de Polignac number, because 8502841520009 - 2²⁴ = 8502824742793 is a prime.

Together with 8502841520011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8502841520039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4251420760004 + 4251420760005.

It is an arithmetic number, because the mean of its divisors is an integer number (4251420760005).

Almost surely, 2^{8502841520009} is an apocalyptic number.

It is an amenable number.

8502841520009 is a deficient number, since it is larger than the sum of its proper divisors (1).

8502841520009 is an equidigital number, since it uses as much as digits as its factorization.

8502841520009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230400, while the sum is 44.

The spelling of 8502841520009 in words is "eight trillion, five hundred two billion, eight hundred forty-one million, five hundred twenty thousand, nine".