6811307775 has 72 divisors (see below), whose sum is σ = 12379676400. Its totient is φ = 3579563520.

The previous prime is 6811307729. The next prime is 6811307779. The reversal of 6811307775 is 5777031186.

It is not a de Polignac number, because 6811307775 - 2⁹ = 6811307263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6811307775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6811307779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4592184 + ... + 4593666.

It is an arithmetic number, because the mean of its divisors is an integer number (171939950).

Almost surely, 2^6811307775 is an apocalyptic number.

6811307775 is a deficient number, since it is larger than the sum of its proper divisors (5568368625).

6811307775 is a wasteful number, since it uses less digits than its factorization.

6811307775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785 (or 1777 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The square root of 6811307775 is about 82530.6474892812. The cubic root of 6811307775 is about 1895.5860394854.

The spelling of 6811307775 in words is "six billion, eight hundred eleven million, three hundred seven thousand, seven hundred seventy-five".