65539864000 has 224 divisors, whose sum is σ = 177677502912. Its totient is φ = 23800320000.

The previous prime is 65539863869. The next prime is 65539864001. The reversal of 65539864000 is 46893556.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65539864001) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 6338835 + ... + 6349165.

It is an arithmetic number, because the mean of its divisors is an integer number (793203138).

Almost surely, 2^65539864000 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 65539864000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88838751456).

65539864000 is an abundant number, since it is smaller than the sum of its proper divisors (112137638912).

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

65539864000 is a wasteful number, since it uses less digits than its factorization.

65539864000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10432 (or 10412 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 65539864000 in words is "sixty-five billion, five hundred thirty-nine million, eight hundred sixty-four thousand".