3645556562065 has 16 divisors (see below), whose sum is σ = 4774271792256. Its totient is φ = 2650254508800.

The previous prime is 3645556562029. The next prime is 3645556562071. The reversal of 3645556562065 is 5602656555463.

It is not a de Polignac number, because 3645556562065 - 2⁷ = 3645556561937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13103016 + ... + 13378345.

It is an arithmetic number, because the mean of its divisors is an integer number (298391987016).

Almost surely, 2^{3645556562065} is an apocalyptic number.

It is an amenable number.

3645556562065 is a deficient number, since it is larger than the sum of its proper divisors (1128715230191).

3645556562065 is a wasteful number, since it uses less digits than its factorization.

3645556562065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26483880.

The product of its (nonzero) digits is 97200000, while the sum is 58.

The spelling of 3645556562065 in words is "three trillion, six hundred forty-five billion, five hundred fifty-six million, five hundred sixty-two thousand, sixty-five".