65564516603 has 16 divisors (see below), whose sum is σ = 67060846080. Its totient is φ = 64078231776.

The previous prime is 65564516597. The next prime is 65564516701. The reversal of 65564516603 is 30661546556.

It is a cyclic number.

It is not a de Polignac number, because 65564516603 - 2¹⁰ = 65564515579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65564516903) 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, 25421168 + ... + 25423746.

It is an arithmetic number, because the mean of its divisors is an integer number (4191302880).

Almost surely, 2^65564516603 is an apocalyptic number.

65564516603 is a deficient number, since it is larger than the sum of its proper divisors (1496329477).

65564516603 is a wasteful number, since it uses less digits than its factorization.

65564516603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306.

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 65564516603 in words is "sixty-five billion, five hundred sixty-four million, five hundred sixteen thousand, six hundred three".