6515105213 has 2 divisors, whose sum is σ = 6515105214. Its totient is φ = 6515105212.

The previous prime is 6515105203. The next prime is 6515105221. The reversal of 6515105213 is 3125015156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3284092249 + 3231012964 = 57307^2 + 56842^2 .

It is a cyclic number.

It is not a de Polignac number, because 6515105213 - 2³² = 2220137917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6515105203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3257552606 + 3257552607.

It is an arithmetic number, because the mean of its divisors is an integer number (3257552607).

Almost surely, 2^6515105213 is an apocalyptic number.

It is an amenable number.

6515105213 is a deficient number, since it is larger than the sum of its proper divisors (1).

6515105213 is an equidigital number, since it uses as much as digits as its factorization.

6515105213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 6515105213 is about 80716.2016759956. The cubic root of 6515105213 is about 1867.7001106810.

The spelling of 6515105213 in words is "six billion, five hundred fifteen million, one hundred five thousand, two hundred thirteen".