6544223013 has 4 divisors (see below), whose sum is σ = 8725630688. Its totient is φ = 4362815340.

The previous prime is 6544223011. The next prime is 6544223017. The reversal of 6544223013 is 3103224456.

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 not a de Polignac number, because 6544223013 - 2¹ = 6544223011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6544223011) 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, 1090703833 + ... + 1090703838.

It is an arithmetic number, because the mean of its divisors is an integer number (2181407672).

Almost surely, 2^6544223013 is an apocalyptic number.

It is an amenable number.

6544223013 is a deficient number, since it is larger than the sum of its proper divisors (2181407675).

6544223013 is a wasteful number, since it uses less digits than its factorization.

6544223013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2181407674.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 6544223013 is about 80896.3720632761. The cubic root of 6544223013 is about 1870.4783979106.

Adding to 6544223013 its reverse (3103224456), we get a palindrome (9647447469).

The spelling of 6544223013 in words is "six billion, five hundred forty-four million, two hundred twenty-three thousand, thirteen".