3834578571265 has 16 divisors (see below), whose sum is σ = 5126333158800. Its totient is φ = 2734044348672.

The previous prime is 3834578571259. The next prime is 3834578571289. The reversal of 3834578571265 is 5621758754383.

It is a happy number.

It is a Cunningham number, because it is equal to 1958208²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1 + 3834578571264 = 1^2 + 1958208^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3834578571265 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3834578571197 and 3834578571206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1017127710 + ... + 1017131479.

It is an arithmetic number, because the mean of its divisors is an integer number (320395822425).

Almost surely, 2^{3834578571265} is an apocalyptic number.

It is an amenable number.

3834578571265 is a deficient number, since it is larger than the sum of its proper divisors (1291754587535).

3834578571265 is a wasteful number, since it uses less digits than its factorization.

3834578571265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034259236.

The product of its digits is 169344000, while the sum is 64.

The spelling of 3834578571265 in words is "three trillion, eight hundred thirty-four billion, five hundred seventy-eight million, five hundred seventy-one thousand, two hundred sixty-five".