3806776660765 has 12 divisors (see below), whose sum is σ = 4946557129524. Its totient is φ = 2811158148864.

The previous prime is 3806776660759. The next prime is 3806776660801. The reversal of 3806776660765 is 5670666776083.

3806776660765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 192527010841 + 3614249649924 = 438779^2 + 1901118^2 .

It is not a de Polignac number, because 3806776660765 - 2¹⁷ = 3806776529693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3806776660765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2252529724 + ... + 2252531413.

It is an arithmetic number, because the mean of its divisors is an integer number (412213094127).

Almost surely, 2^{3806776660765} is an apocalyptic number.

It is an amenable number.

3806776660765 is a deficient number, since it is larger than the sum of its proper divisors (1139780468759).

3806776660765 is a wasteful number, since it uses less digits than its factorization.

3806776660765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4505061168 (or 4505061155 counting only the distinct ones).

The product of its (nonzero) digits is 320060160, while the sum is 67.

The spelling of 3806776660765 in words is "three trillion, eight hundred six billion, seven hundred seventy-six million, six hundred sixty thousand, seven hundred sixty-five".