65044475242656 has 768 divisors, whose sum is σ = 223188049244160. Its totient is φ = 16106278256640.

The previous prime is 65044475242601. The next prime is 65044475242657. The reversal of 65044475242656 is 65624257444056.

It is a self number, because there is not a number n which added to its sum of digits gives 65044475242656.

It is not an unprimeable number, because it can be changed into a prime (65044475242657) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 22026573276 + ... + 22026576228.

It is an arithmetic number, because the mean of its divisors is an integer number (290609439120).

Almost surely, 2^{65044475242656} 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 65044475242656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111594024622080).

65044475242656 is an abundant number, since it is smaller than the sum of its proper divisors (158143574001504).

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

65044475242656 is a wasteful number, since it uses less digits than its factorization.

65044475242656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4149 (or 4141 counting only the distinct ones).

The product of its (nonzero) digits is 193536000, while the sum is 60.

The spelling of 65044475242656 in words is "sixty-five trillion, forty-four billion, four hundred seventy-five million, two hundred forty-two thousand, six hundred fifty-six".