6721718113 has 8 divisors (see below), whose sum is σ = 7488800640. Its totient is φ = 5980638480.

The previous prime is 6721718071. The next prime is 6721718119. The reversal of 6721718113 is 3118171276.

6721718113 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6721718113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6721718119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6500178 + ... + 6501211.

It is an arithmetic number, because the mean of its divisors is an integer number (936100080).

Almost surely, 2^6721718113 is an apocalyptic number.

It is an amenable number.

6721718113 is a deficient number, since it is larger than the sum of its proper divisors (767082527).

6721718113 is a wasteful number, since it uses less digits than its factorization.

6721718113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13001447.

The product of its digits is 14112, while the sum is 37.

The square root of 6721718113 is about 81986.0848742029. The cubic root of 6721718113 is about 1887.2384024574.

Adding to 6721718113 its reverse (3118171276), we get a palindrome (9839889389).

The spelling of 6721718113 in words is "six billion, seven hundred twenty-one million, seven hundred eighteen thousand, one hundred thirteen".