6513612013 has 2 divisors, whose sum is σ = 6513612014. Its totient is φ = 6513612012.

The previous prime is 6513611987. The next prime is 6513612103. The reversal of 6513612013 is 3102163156.

Together with next prime (6513612103) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6425946244 + 87665769 = 80162^2 + 9363^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6513612013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6513612113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3256806006 + 3256806007.

It is an arithmetic number, because the mean of its divisors is an integer number (3256806007).

Almost surely, 2^6513612013 is an apocalyptic number.

It is an amenable number.

6513612013 is a deficient number, since it is larger than the sum of its proper divisors (1).

6513612013 is an equidigital number, since it uses as much as digits as its factorization.

6513612013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 6513612013 is about 80706.9514540105. The cubic root of 6513612013 is about 1867.5574134259.

Adding to 6513612013 its reverse (3102163156), we get a palindrome (9615775169).

The spelling of 6513612013 in words is "six billion, five hundred thirteen million, six hundred twelve thousand, thirteen".