6718672397844 has 216 divisors, whose sum is σ = 19133911165824. Its totient is φ = 1985161516800.

The previous prime is 6718672397839. The next prime is 6718672397881. The reversal of 6718672397844 is 4487932768176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 340572709 + ... + 340592435.

It is an arithmetic number, because the mean of its divisors is an integer number (88582922064).

Almost surely, 2^{6718672397844} 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 6718672397844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9566955582912).

6718672397844 is an abundant number, since it is smaller than the sum of its proper divisors (12415238767980).

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

6718672397844 is a wasteful number, since it uses less digits than its factorization.

6718672397844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21707 (or 21691 counting only the distinct ones).

The product of its digits is 682795008, while the sum is 72.

The spelling of 6718672397844 in words is "six trillion, seven hundred eighteen billion, six hundred seventy-two million, three hundred ninety-seven thousand, eight hundred forty-four".