65316260321 has 16 divisors (see below), whose sum is σ = 72259698000. Its totient is φ = 58647794688.

The previous prime is 65316260299. The next prime is 65316260327. The reversal of 65316260321 is 12306261356.

65316260321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 6055174225 + 59261086096 = 77815^2 + 243436^2 .

It is a cyclic number.

It is not a de Polignac number, because 65316260321 - 2¹⁸ = 65315998177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65316260327) 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, 2221565 + ... + 2250773.

It is an arithmetic number, because the mean of its divisors is an integer number (4516231125).

Almost surely, 2^65316260321 is an apocalyptic number.

It is an amenable number.

65316260321 is a deficient number, since it is larger than the sum of its proper divisors (6943437679).

65316260321 is a wasteful number, since it uses less digits than its factorization.

65316260321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33908.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 65316260321 in words is "sixty-five billion, three hundred sixteen million, two hundred sixty thousand, three hundred twenty-one".