6518064913 has 4 divisors (see below), whose sum is σ = 6677042148. Its totient is φ = 6359087680.

The previous prime is 6518064907. The next prime is 6518064947. The reversal of 6518064913 is 3194608156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 432972864 + 6085092049 = 20808^2 + 78007^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6518064913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6518064913.

It is not an unprimeable number, because it can be changed into a prime (6518064013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79488556 + ... + 79488637.

It is an arithmetic number, because the mean of its divisors is an integer number (1669260537).

Almost surely, 2^6518064913 is an apocalyptic number.

It is an amenable number.

6518064913 is a deficient number, since it is larger than the sum of its proper divisors (158977235).

6518064913 is a wasteful number, since it uses less digits than its factorization.

6518064913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158977234.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 6518064913 is about 80734.5335838388. The cubic root of 6518064913 is about 1867.9828891874.

The spelling of 6518064913 in words is "six billion, five hundred eighteen million, sixty-four thousand, nine hundred thirteen".