3648618560765 has 4 divisors (see below), whose sum is σ = 4378342272924. Its totient is φ = 2918894848608.

The previous prime is 3648618560749. The next prime is 3648618560771. The reversal of 3648618560765 is 5670658168463.

It is a happy number.

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 1411862015524 + 2236756545241 = 1188218^2 + 1495579^2 .

It is a cyclic number.

It is not a de Polignac number, because 3648618560765 - 2⁴ = 3648618560749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364861856072 + ... + 364861856081.

It is an arithmetic number, because the mean of its divisors is an integer number (1094585568231).

Almost surely, 2^{3648618560765} is an apocalyptic number.

It is an amenable number.

3648618560765 is a deficient number, since it is larger than the sum of its proper divisors (729723712159).

3648618560765 is an equidigital number, since it uses as much as digits as its factorization.

3648618560765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729723712158.

The product of its (nonzero) digits is 174182400, while the sum is 65.

The spelling of 3648618560765 in words is "three trillion, six hundred forty-eight billion, six hundred eighteen million, five hundred sixty thousand, seven hundred sixty-five".