65391363980800 has 480 divisors, whose sum is σ = 201532359165984. Its totient is φ = 20658388992000.

The previous prime is 65391363980797. The next prime is 65391363980867. The reversal of 65391363980800 is 808936319356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30066060 + ... + 32167540.

Almost surely, 2^{65391363980800} 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 65391363980800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100766179582992).

65391363980800 is an abundant number, since it is smaller than the sum of its proper divisors (136140995185184).

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

65391363980800 is a wasteful number, since it uses less digits than its factorization.

65391363980800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101550 (or 2101529 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 61.

The spelling of 65391363980800 in words is "sixty-five trillion, three hundred ninety-one billion, three hundred sixty-three million, nine hundred eighty thousand, eight hundred".