65065880000 has 560 divisors, whose sum is σ = 190629479040. Its totient is φ = 21772800000.

The previous prime is 65065879999. The next prime is 65065880029. The reversal of 65065880000 is 8856056.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 359479910 + ... + 359480090.

It is an arithmetic number, because the mean of its divisors is an integer number (340409784).

Almost surely, 2^65065880000 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 65065880000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95314739520).

65065880000 is an abundant number, since it is smaller than the sum of its proper divisors (125563599040).

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

65065880000 is a wasteful number, since it uses less digits than its factorization.

65065880000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 65065880000 in words is "sixty-five billion, sixty-five million, eight hundred eighty thousand".