3665226313165 has 16 divisors (see below), whose sum is σ = 4475819730096. Its totient is φ = 2880599385600.

The previous prime is 3665226313129. The next prime is 3665226313169. The reversal of 3665226313165 is 5613136225663.

It can be written as a sum of positive squares in 8 ways, for example, as 1808651109321 + 1856575203844 = 1344861^2 + 1362562^2 .

It is not a de Polignac number, because 3665226313165 - 2¹⁹ = 3665225788877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665226313169) 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, 7068192 + ... + 7569001.

It is an arithmetic number, because the mean of its divisors is an integer number (279738733131).

Almost surely, 2^{3665226313165} is an apocalyptic number.

It is an amenable number.

3665226313165 is a deficient number, since it is larger than the sum of its proper divisors (810593416931).

3665226313165 is a wasteful number, since it uses less digits than its factorization.

3665226313165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14638080.

The product of its digits is 3499200, while the sum is 49.

The spelling of 3665226313165 in words is "three trillion, six hundred sixty-five billion, two hundred twenty-six million, three hundred thirteen thousand, one hundred sixty-five".