6844647513 has 16 divisors (see below), whose sum is σ = 9960578496. Its totient is φ = 4146301440.

The previous prime is 6844647503. The next prime is 6844647527. The reversal of 6844647513 is 3157464486.

It is not a de Polignac number, because 6844647513 - 2⁴ = 6844647497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6844647503) 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 in 15 ways as a sum of consecutive naturals, for example, 22881 + ... + 119217.

It is an arithmetic number, because the mean of its divisors is an integer number (622536156).

Almost surely, 2^6844647513 is an apocalyptic number.

It is an amenable number.

6844647513 is a deficient number, since it is larger than the sum of its proper divisors (3115930983).

6844647513 is a wasteful number, since it uses less digits than its factorization.

6844647513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98504.

The product of its digits is 1935360, while the sum is 48.

The square root of 6844647513 is about 82732.3849106261. The cubic root of 6844647513 is about 1898.6738218343.

The spelling of 6844647513 in words is "six billion, eight hundred forty-four million, six hundred forty-seven thousand, five hundred thirteen".