65824576664 has 64 divisors (see below), whose sum is σ = 154259942400. Its totient is φ = 25581888000.

The previous prime is 65824576603. The next prime is 65824576667. The reversal of 65824576664 is 46667542856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65824576667) 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 15 ways as a sum of consecutive naturals, for example, 113777 + ... + 380255.

It is an arithmetic number, because the mean of its divisors is an integer number (2410311600).

Almost surely, 2^65824576664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65824576664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77129971200).

65824576664 is an abundant number, since it is smaller than the sum of its proper divisors (88435365736).

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

65824576664 is a wasteful number, since it uses less digits than its factorization.

65824576664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266904 (or 266900 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 59.

The spelling of 65824576664 in words is "sixty-five billion, eight hundred twenty-four million, five hundred seventy-six thousand, six hundred sixty-four".