65381203056 has 120 divisors (see below), whose sum is σ = 185994524160. Its totient is φ = 19776177408.

The previous prime is 65381203007. The next prime is 65381203081. The reversal of 65381203056 is 65030218356.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 410305 + ... + 546911.

It is an arithmetic number, because the mean of its divisors is an integer number (1549954368).

Almost surely, 2^65381203056 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 65381203056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92997262080).

65381203056 is an abundant number, since it is smaller than the sum of its proper divisors (120613321104).

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

65381203056 is a wasteful number, since it uses less digits than its factorization.

65381203056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136703 (or 136684 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 65381203056 in words is "sixty-five billion, three hundred eighty-one million, two hundred three thousand, fifty-six".