6778341843840 has 896 divisors, whose sum is σ = 27844029849600. Its totient is φ = 1545004855296.

The previous prime is 6778341843809. The next prime is 6778341843887. The reversal of 6778341843840 is 483481438776.

6778341843840 is a `hidden beast` number, since 6 + 7 + 78 + 3 + 4 + 184 + 384 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (896).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 1250844651 + ... + 1250850069.

Almost surely, 2^{6778341843840} is an apocalyptic number.

6778341843840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6778341843840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13922014924800).

6778341843840 is an abundant number, since it is smaller than the sum of its proper divisors (21065688005760).

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

6778341843840 is an equidigital number, since it uses as much as digits as its factorization.

6778341843840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5846 (or 5819 counting only the distinct ones).

The product of its (nonzero) digits is 86704128, while the sum is 63.

The spelling of 6778341843840 in words is "six trillion, seven hundred seventy-eight billion, three hundred forty-one million, eight hundred forty-three thousand, eight hundred forty".