6613872811 has 64 divisors (see below), whose sum is σ = 8896204800. Its totient is φ = 4771353600.

The previous prime is 6613872779. The next prime is 6613872817. The reversal of 6613872811 is 1182783166.

It is not a de Polignac number, because 6613872811 - 2⁵ = 6613872779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6613872817) 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 63 ways as a sum of consecutive naturals, for example, 5599641 + ... + 5600821.

It is an arithmetic number, because the mean of its divisors is an integer number (139003200).

Almost surely, 2^6613872811 is an apocalyptic number.

6613872811 is a deficient number, since it is larger than the sum of its proper divisors (2282331989).

6613872811 is a wasteful number, since it uses less digits than its factorization.

6613872811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340.

The product of its digits is 96768, while the sum is 43.

The square root of 6613872811 is about 81325.7204763659. The cubic root of 6613872811 is about 1877.0907934945.

The spelling of 6613872811 in words is "six billion, six hundred thirteen million, eight hundred seventy-two thousand, eight hundred eleven".