8518512073 has 2 divisors, whose sum is σ = 8518512074. Its totient is φ = 8518512072.

The previous prime is 8518512071. The next prime is 8518512077. The reversal of 8518512073 is 3702158158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5784058809 + 2734453264 = 76053^2 + 52292^2 .

It is a cyclic number.

It is not a de Polignac number, because 8518512073 - 2¹ = 8518512071 is a prime.

Together with 8518512071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8518512071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4259256036 + 4259256037.

It is an arithmetic number, because the mean of its divisors is an integer number (4259256037).

Almost surely, 2^8518512073 is an apocalyptic number.

It is an amenable number.

8518512073 is a deficient number, since it is larger than the sum of its proper divisors (1).

8518512073 is an equidigital number, since it uses as much as digits as its factorization.

8518512073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 8518512073 is about 92295.7857813671. The cubic root of 8518512073 is about 2042.3080433066.

The spelling of 8518512073 in words is "eight billion, five hundred eighteen million, five hundred twelve thousand, seventy-three".