65664246318 has 16 divisors (see below), whose sum is σ = 143267446656. Its totient is φ = 19898256440.

The previous prime is 65664246317. The next prime is 65664246341. The reversal of 65664246318 is 81364246656.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65664246317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497456346 + ... + 497456477.

It is an arithmetic number, because the mean of its divisors is an integer number (8954215416).

Almost surely, 2^65664246318 is an apocalyptic number.

65664246318 is an abundant number, since it is smaller than the sum of its proper divisors (77603200338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65664246318 is a wasteful number, since it uses less digits than its factorization.

65664246318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994912839.

The product of its digits is 4976640, while the sum is 51.

The spelling of 65664246318 in words is "sixty-five billion, six hundred sixty-four million, two hundred forty-six thousand, three hundred eighteen".