6721111423 has 8 divisors (see below), whose sum is σ = 7239710016. Its totient is φ = 6202740000.

The previous prime is 6721111409. The next prime is 6721111447. The reversal of 6721111423 is 3241111276.

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

It is a cyclic number.

It is not a de Polignac number, because 6721111423 - 2⁵ = 6721111391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6721111391 and 6721111400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6721111403) 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, 7353 + ... + 116173.

It is an arithmetic number, because the mean of its divisors is an integer number (904963752).

Almost surely, 2^6721111423 is an apocalyptic number.

6721111423 is a deficient number, since it is larger than the sum of its proper divisors (518598593).

6721111423 is a wasteful number, since it uses less digits than its factorization.

6721111423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113585.

The product of its digits is 2016, while the sum is 28.

The square root of 6721111423 is about 81982.3848335726. The cubic root of 6721111423 is about 1887.1816211853.

Adding to 6721111423 its reverse (3241111276), we get a palindrome (9962222699).

The spelling of 6721111423 in words is "six billion, seven hundred twenty-one million, one hundred eleven thousand, four hundred twenty-three".