6516365413 has 2 divisors, whose sum is σ = 6516365414. Its totient is φ = 6516365412.

The previous prime is 6516365411. The next prime is 6516365437. The reversal of 6516365413 is 3145636156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4955878404 + 1560487009 = 70398^2 + 39503^2 .

It is a cyclic number.

It is not a de Polignac number, because 6516365413 - 2¹ = 6516365411 is a prime.

Together with 6516365411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6516365411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3258182706 + 3258182707.

It is an arithmetic number, because the mean of its divisors is an integer number (3258182707).

Almost surely, 2^6516365413 is an apocalyptic number.

It is an amenable number.

6516365413 is a deficient number, since it is larger than the sum of its proper divisors (1).

6516365413 is an equidigital number, since it uses as much as digits as its factorization.

6516365413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 40.

The square root of 6516365413 is about 80724.0076619094. The cubic root of 6516365413 is about 1867.8205243896.

The spelling of 6516365413 in words is "six billion, five hundred sixteen million, three hundred sixty-five thousand, four hundred thirteen".