6771189681 has 8 divisors (see below), whose sum is σ = 10031392160. Its totient is φ = 4514126436.

The previous prime is 6771189653. The next prime is 6771189707. The reversal of 6771189681 is 1869811776.

It is not a de Polignac number, because 6771189681 - 2⁹ = 6771189169 is a prime.

It is a super-2 number, since 2×6771189681² = 91698019392161763522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6771189611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125392375 + ... + 125392428.

It is an arithmetic number, because the mean of its divisors is an integer number (1253924020).

Almost surely, 2^6771189681 is an apocalyptic number.

It is an amenable number.

6771189681 is a deficient number, since it is larger than the sum of its proper divisors (3260202479).

6771189681 is a wasteful number, since it uses less digits than its factorization.

6771189681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250784812 (or 250784806 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 54.

The square root of 6771189681 is about 82287.2388709209. The cubic root of 6771189681 is about 1891.8570887359.

The spelling of 6771189681 in words is "six billion, seven hundred seventy-one million, one hundred eighty-nine thousand, six hundred eighty-one".