6649113911 has 16 divisors (see below), whose sum is σ = 7332249600. Its totient is φ = 5979204000.

The previous prime is 6649113901. The next prime is 6649113931. The reversal of 6649113911 is 1193119466.

It is a happy number.

It is not a de Polignac number, because 6649113911 - 2⁶ = 6649113847 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 (6649113901) 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, 1596650 + ... + 1600808.

It is an arithmetic number, because the mean of its divisors is an integer number (458265600).

Almost surely, 2^6649113911 is an apocalyptic number.

6649113911 is a deficient number, since it is larger than the sum of its proper divisors (683135689).

6649113911 is a wasteful number, since it uses less digits than its factorization.

6649113911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5710.

The product of its digits is 34992, while the sum is 41.

The square root of 6649113911 is about 81542.0990102659. The cubic root of 6649113911 is about 1880.4188284266.

The spelling of 6649113911 in words is "six billion, six hundred forty-nine million, one hundred thirteen thousand, nine hundred eleven".