6615132313 has 4 divisors (see below), whose sum is σ = 6619511808. Its totient is φ = 6610752820.

The previous prime is 6615132299. The next prime is 6615132347. The reversal of 6615132313 is 3132315166.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6615132313 - 2⁹ = 6615131801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6615132113) 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, 2187481 + ... + 2190502.

It is an arithmetic number, because the mean of its divisors is an integer number (1654877952).

Almost surely, 2^6615132313 is an apocalyptic number.

It is an amenable number.

6615132313 is a deficient number, since it is larger than the sum of its proper divisors (4379495).

6615132313 is a wasteful number, since it uses less digits than its factorization.

6615132313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379494.

The product of its digits is 9720, while the sum is 31.

The square root of 6615132313 is about 81333.4636727098. The cubic root of 6615132313 is about 1877.2099394985.

Adding to 6615132313 its reverse (3132315166), we get a palindrome (9747447479).

The spelling of 6615132313 in words is "six billion, six hundred fifteen million, one hundred thirty-two thousand, three hundred thirteen".