6771764865 has 16 divisors (see below), whose sum is σ = 10840243968. Its totient is φ = 3609801216.

The previous prime is 6771764861. The next prime is 6771764891. The reversal of 6771764865 is 5684671776.

6771764865 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6771764865 - 2² = 6771764861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6771764861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81657 + ... + 142166.

It is an arithmetic number, because the mean of its divisors is an integer number (677515248).

Almost surely, 2^6771764865 is an apocalyptic number.

It is an amenable number.

6771764865 is a deficient number, since it is larger than the sum of its proper divisors (4068479103).

6771764865 is a wasteful number, since it uses less digits than its factorization.

6771764865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225848.

The product of its digits is 11854080, while the sum is 57.

The square root of 6771764865 is about 82290.7337736151. The cubic root of 6771764865 is about 1891.9106556456.

The spelling of 6771764865 in words is "six billion, seven hundred seventy-one million, seven hundred sixty-four thousand, eight hundred sixty-five".