65444110720 has 64 divisors (see below), whose sum is σ = 164686690800. Its totient is φ = 24799868928.

The previous prime is 65444110681. The next prime is 65444110723. The reversal of 65444110720 is 2701144456.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65444110723) 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 7 ways as a sum of consecutive naturals, for example, 2678799 + ... + 2703118.

Almost surely, 2^65444110720 is an apocalyptic number.

It is an amenable number.

65444110720 is an abundant number, since it is smaller than the sum of its proper divisors (99242580080).

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

65444110720 is a wasteful number, since it uses less digits than its factorization.

65444110720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5381955 (or 5381943 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The spelling of 65444110720 in words is "sixty-five billion, four hundred forty-four million, one hundred ten thousand, seven hundred twenty".