6781371081168 has 80 divisors (see below), whose sum is σ = 17717427012096. Its totient is φ = 2234878458240.

The previous prime is 6781371081013. The next prime is 6781371081193. The reversal of 6781371081168 is 8611801731876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1270923 + ... + 3895893.

Almost surely, 2^{6781371081168} 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 6781371081168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8858713506048).

6781371081168 is an abundant number, since it is smaller than the sum of its proper divisors (10936055930928).

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

6781371081168 is a wasteful number, since it uses less digits than its factorization.

6781371081168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625592 (or 2625586 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 57.

The spelling of 6781371081168 in words is "six trillion, seven hundred eighty-one billion, three hundred seventy-one million, eighty-one thousand, one hundred sixty-eight".