6855688344380 has 96 divisors (see below), whose sum is σ = 14856879679488. Its totient is φ = 2655848160000.

The previous prime is 6855688344367. The next prime is 6855688344391. The reversal of 6855688344380 is 834438865586.

It is a self number, because there is not a number n which added to its sum of digits gives 6855688344380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48065570 + ... + 48207990.

It is an arithmetic number, because the mean of its divisors is an integer number (154759163328).

Almost surely, 2^{6855688344380} 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 6855688344380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7428439839744).

6855688344380 is an abundant number, since it is smaller than the sum of its proper divisors (8001191335108).

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

6855688344380 is a wasteful number, since it uses less digits than its factorization.

6855688344380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142947 (or 142945 counting only the distinct ones).

The product of its (nonzero) digits is 530841600, while the sum is 68.

The spelling of 6855688344380 in words is "six trillion, eight hundred fifty-five billion, six hundred eighty-eight million, three hundred forty-four thousand, three hundred eighty".