65516065065 has 24 divisors (see below), whose sum is σ = 123884923968. Its totient is φ = 31765364640.

The previous prime is 65516065037. The next prime is 65516065067. The reversal of 65516065065 is 56056061556.

It is not a de Polignac number, because 65516065065 - 2¹⁷ = 65515933993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 65516065065.

It is not an unprimeable number, because it can be changed into a prime (65516065067) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 66177349 + ... + 66178338.

It is an arithmetic number, because the mean of its divisors is an integer number (5161871832).

Almost surely, 2^65516065065 is an apocalyptic number.

It is an amenable number.

65516065065 is a deficient number, since it is larger than the sum of its proper divisors (58368858903).

65516065065 is a wasteful number, since it uses less digits than its factorization.

65516065065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132355709 (or 132355706 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 65516065065 in words is "sixty-five billion, five hundred sixteen million, sixty-five thousand, sixty-five".