6678618336 has 144 divisors (see below), whose sum is σ = 21158897760. Its totient is φ = 1984066560.

The previous prime is 6678618329. The next prime is 6678618341. The reversal of 6678618336 is 6338168766.

It is a tau number, because it is divible by the number of its divisors (144).

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 23 ways as a sum of consecutive naturals, for example, 77821 + ... + 139331.

It is an arithmetic number, because the mean of its divisors is an integer number (146936790).

Almost surely, 2^6678618336 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 6678618336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10579448880).

6678618336 is an abundant number, since it is smaller than the sum of its proper divisors (14480279424).

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

6678618336 is a wasteful number, since it uses less digits than its factorization.

6678618336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61569 (or 61558 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 6678618336 is about 81722.8140484651. The cubic root of 6678618336 is about 1883.1960814762.

The spelling of 6678618336 in words is "six billion, six hundred seventy-eight million, six hundred eighteen thousand, three hundred thirty-six".