6777228081 has 32 divisors (see below), whose sum is σ = 9803566080. Its totient is φ = 4139783424.

The previous prime is 6777228079. The next prime is 6777228083. The reversal of 6777228081 is 1808227776.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6777228079) and next prime (6777228083).

It is not a de Polignac number, because 6777228081 - 2¹ = 6777228079 is a prime.

It is a super-2 number, since 2×6777228081² = 91861640923789885122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6777228081.

It is not an unprimeable number, because it can be changed into a prime (6777228083) 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 31 ways as a sum of consecutive naturals, for example, 4708960 + ... + 4710398.

It is an arithmetic number, because the mean of its divisors is an integer number (306361440).

Almost surely, 2^6777228081 is an apocalyptic number.

It is an amenable number.

6777228081 is a deficient number, since it is larger than the sum of its proper divisors (3026337999).

6777228081 is a wasteful number, since it uses less digits than its factorization.

6777228081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265.

The product of its (nonzero) digits is 526848, while the sum is 48.

The square root of 6777228081 is about 82323.9216813679. The cubic root of 6777228081 is about 1892.4192940122.

The spelling of 6777228081 in words is "six billion, seven hundred seventy-seven million, two hundred twenty-eight thousand, eighty-one".