6897821440000 has 720 divisors, whose sum is σ = 18421756713360. Its totient is φ = 2580357120000.

The previous prime is 6897821439991. The next prime is 6897821440021. The reversal of 6897821440000 is 441287986.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 41304319917 + ... + 41304320083.

It is an arithmetic number, because the mean of its divisors is an integer number (25585773213).

Almost surely, 2^{6897821440000} 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 6897821440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9210878356680).

6897821440000 is an abundant number, since it is smaller than the sum of its proper divisors (11523935273360).

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

6897821440000 is an equidigital number, since it uses as much as digits as its factorization.

6897821440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 6897821440000 in words is "six trillion, eight hundred ninety-seven billion, eight hundred twenty-one million, four hundred forty thousand".