6723218712 has 128 divisors (see below), whose sum is σ = 19923724800. Its totient is φ = 1849817088.

The previous prime is 6723218707. The next prime is 6723218731. The reversal of 6723218712 is 2178123276.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2107983 + ... + 2111169.

It is an arithmetic number, because the mean of its divisors is an integer number (155654100).

Almost surely, 2^6723218712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6723218712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9961862400).

6723218712 is an abundant number, since it is smaller than the sum of its proper divisors (13200506088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6723218712 is a wasteful number, since it uses less digits than its factorization.

6723218712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3665 (or 3661 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 6723218712 is about 81995.2359103869. The cubic root of 6723218712 is about 1887.3788316996.

The spelling of 6723218712 in words is "six billion, seven hundred twenty-three million, two hundred eighteen thousand, seven hundred twelve".