6513323165 has 8 divisors (see below), whose sum is σ = 7923056568. Its totient is φ = 5139279360.

The previous prime is 6513323119. The next prime is 6513323183. The reversal of 6513323165 is 5613233156.

It can be written as a sum of positive squares in 4 ways, for example, as 1735472281 + 4777850884 = 41659^2 + 69122^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6513323165 - 2¹² = 6513319069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8921996 + ... + 8922725.

It is an arithmetic number, because the mean of its divisors is an integer number (990382071).

Almost surely, 2^6513323165 is an apocalyptic number.

It is an amenable number.

6513323165 is a deficient number, since it is larger than the sum of its proper divisors (1409733403).

6513323165 is a wasteful number, since it uses less digits than its factorization.

6513323165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17844799.

The product of its digits is 48600, while the sum is 35.

The square root of 6513323165 is about 80705.1619476722. The cubic root of 6513323165 is about 1867.5298072275.

Subtracting from 6513323165 its reverse (5613233156), we obtain a palindrome (900090009).

The spelling of 6513323165 in words is "six billion, five hundred thirteen million, three hundred twenty-three thousand, one hundred sixty-five".