8518000997959 has 2 divisors, whose sum is σ = 8518000997960. Its totient is φ = 8518000997958.

The previous prime is 8518000997923. The next prime is 8518000997977. The reversal of 8518000997959 is 9597990008158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8518000997959 - 2³⁹ = 7968245184071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8518000997999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4259000498979 + 4259000498980.

It is an arithmetic number, because the mean of its divisors is an integer number (4259000498980).

Almost surely, 2^{8518000997959} is an apocalyptic number.

8518000997959 is a deficient number, since it is larger than the sum of its proper divisors (1).

8518000997959 is an equidigital number, since it uses as much as digits as its factorization.

8518000997959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73483200, while the sum is 70.

The spelling of 8518000997959 in words is "eight trillion, five hundred eighteen billion, nine hundred ninety-seven thousand, nine hundred fifty-nine".