6771857868 has 144 divisors (see below), whose sum is σ = 18918681600. Its totient is φ = 2034046080.

The previous prime is 6771857863. The next prime is 6771857903. The reversal of 6771857868 is 8687581776.

It is not an unprimeable number, because it can be changed into a prime (6771857863) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1248330 + ... + 1253742.

Almost surely, 2^6771857868 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 6771857868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9459340800).

6771857868 is an abundant number, since it is smaller than the sum of its proper divisors (12146823732).

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

6771857868 is a wasteful number, since it uses less digits than its factorization.

6771857868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5532 (or 5527 counting only the distinct ones).

The product of its digits is 31610880, while the sum is 63.

The square root of 6771857868 is about 82291.2988596000. The cubic root of 6771857868 is about 1891.9193167339.

The spelling of 6771857868 in words is "six billion, seven hundred seventy-one million, eight hundred fifty-seven thousand, eight hundred sixty-eight".