6780683356872 has 128 divisors (see below), whose sum is σ = 17902109894400. Its totient is φ = 2135918112768.

The previous prime is 6780683356871. The next prime is 6780683356873. The reversal of 6780683356872 is 2786533860876.

It is an interprime number because it is at equal distance from previous prime (6780683356871) and next prime (6780683356873).

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a junction number, because it is equal to n+sod(n) for n = 6780683356797 and 6780683356806.

It is not an unprimeable number, because it can be changed into a prime (6780683356871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60715548 + ... + 60827124.

It is an arithmetic number, because the mean of its divisors is an integer number (139860233550).

Almost surely, 2^{6780683356872} 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 6780683356872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8951054947200).

6780683356872 is an abundant number, since it is smaller than the sum of its proper divisors (11121426537528).

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

6780683356872 is a wasteful number, since it uses less digits than its factorization.

6780683356872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112935 (or 112931 counting only the distinct ones).

The product of its (nonzero) digits is 487710720, while the sum is 69.

The spelling of 6780683356872 in words is "six trillion, seven hundred eighty billion, six hundred eighty-three million, three hundred fifty-six thousand, eight hundred seventy-two".