6856191342 has 192 divisors, whose sum is σ = 20134033920. Its totient is φ = 1628294400.

The previous prime is 6856191337. The next prime is 6856191359. The reversal of 6856191342 is 2431916586.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1962217 + ... + 1965707.

It is an arithmetic number, because the mean of its divisors is an integer number (104864760).

Almost surely, 2^6856191342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6856191342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10067016960).

6856191342 is an abundant number, since it is smaller than the sum of its proper divisors (13277842578).

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

6856191342 is a wasteful number, since it uses less digits than its factorization.

6856191342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639 (or 3636 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 6856191342 is about 82802.1216032536. The cubic root of 6856191342 is about 1899.7406240577.

The spelling of 6856191342 in words is "six billion, eight hundred fifty-six million, one hundred ninety-one thousand, three hundred forty-two".