6378011857 has 8 divisors (see below), whose sum is σ = 7290483200. Its totient is φ = 5465872224.

The previous prime is 6378011797. The next prime is 6378011867. The reversal of 6378011857 is 7581108736.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6378011857 - 2¹¹ = 6378009809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6378011867) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 40257 + ... + 119902.

It is an arithmetic number, because the mean of its divisors is an integer number (911310400).

Almost surely, 2^6378011857 is an apocalyptic number.

It is an amenable number.

6378011857 is a deficient number, since it is larger than the sum of its proper divisors (912471343).

6378011857 is a wasteful number, since it uses less digits than its factorization.

6378011857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165855.

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 6378011857 is about 79862.4558663206. The cubic root of 6378011857 is about 1854.5068454607.

The spelling of 6378011857 in words is "six billion, three hundred seventy-eight million, eleven thousand, eight hundred fifty-seven".