6871021344 has 144 divisors (see below), whose sum is σ = 22105530720. Its totient is φ = 2082101760.

The previous prime is 6871021327. The next prime is 6871021349. The reversal of 6871021344 is 4431201786.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6871021299 and 6871021308.

It is not an unprimeable number, because it can be changed into a prime (6871021349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45372 + ... + 125700.

It is an arithmetic number, because the mean of its divisors is an integer number (153510630).

Almost surely, 2^6871021344 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 6871021344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11052765360).

6871021344 is an abundant number, since it is smaller than the sum of its proper divisors (15234509376).

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

6871021344 is a wasteful number, since it uses less digits than its factorization.

6871021344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80365 (or 80345 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 6871021344 is about 82891.6240883239. The cubic root of 6871021344 is about 1901.1093562150.

The spelling of 6871021344 in words is "six billion, eight hundred seventy-one million, twenty-one thousand, three hundred forty-four".