3648104673865 has 4 divisors (see below), whose sum is σ = 4377725608644. Its totient is φ = 2918483739088.

The previous prime is 3648104673859. The next prime is 3648104673919. The reversal of 3648104673865 is 5683764018463.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 678190131529 + 2969914542336 = 823523^2 + 1723344^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3648104673865 is a prime.

It is a super-2 number, since 2×3648104673865² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 364810467382 + ... + 364810467391.

It is an arithmetic number, because the mean of its divisors is an integer number (1094431402161).

Almost surely, 2^{3648104673865} is an apocalyptic number.

It is an amenable number.

3648104673865 is a deficient number, since it is larger than the sum of its proper divisors (729620934779).

3648104673865 is an equidigital number, since it uses as much as digits as its factorization.

3648104673865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729620934778.

The product of its (nonzero) digits is 69672960, while the sum is 61.

The spelling of 3648104673865 in words is "three trillion, six hundred forty-eight billion, one hundred four million, six hundred seventy-three thousand, eight hundred sixty-five".