6857841189888 has 1320 divisors, whose sum is σ = 23497372166400. Its totient is φ = 1987332931584.

The previous prime is 6857841189887. The next prime is 6857841189893. The reversal of 6857841189888 is 8889811487586.

6857841189888 is a `hidden beast` number, since 68 + 57 + 8 + 411 + 8 + 98 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is not an unprimeable number, because it can be changed into a prime (6857841189887) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 28693896073 + ... + 28693896311.

It is an arithmetic number, because the mean of its divisors is an integer number (17801039520).

Almost surely, 2^{6857841189888} 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 6857841189888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11748686083200).

6857841189888 is an abundant number, since it is smaller than the sum of its proper divisors (16639530976512).

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

6857841189888 is a wasteful number, since it uses less digits than its factorization.

6857841189888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 369 counting only the distinct ones).

The product of its digits is 1981808640, while the sum is 81.

The spelling of 6857841189888 in words is "six trillion, eight hundred fifty-seven billion, eight hundred forty-one million, one hundred eighty-nine thousand, eight hundred eighty-eight".