65765445744 has 120 divisors (see below), whose sum is σ = 182653309440. Its totient is φ = 20383357952.

The previous prime is 65765445709. The next prime is 65765445803. The reversal of 65765445744 is 44754456756.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1122817 + ... + 1179935.

It is an arithmetic number, because the mean of its divisors is an integer number (1522110912).

Almost surely, 2^65765445744 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 65765445744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91326654720).

65765445744 is an abundant number, since it is smaller than the sum of its proper divisors (116887863696).

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

65765445744 is a wasteful number, since it uses less digits than its factorization.

65765445744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57247 (or 57224 counting only the distinct ones).

The product of its digits is 56448000, while the sum is 57.

The spelling of 65765445744 in words is "sixty-five billion, seven hundred sixty-five million, four hundred forty-five thousand, seven hundred forty-four".