65357820800 has 192 divisors, whose sum is σ = 167139778560. Its totient is φ = 25227417600.

The previous prime is 65357820797. The next prime is 65357820823. The reversal of 65357820800 is 802875356.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45928889 + ... + 45930311.

It is an arithmetic number, because the mean of its divisors is an integer number (870519680).

Almost surely, 2^65357820800 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 65357820800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83569889280).

65357820800 is an abundant number, since it is smaller than the sum of its proper divisors (101781957760).

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

65357820800 is a wasteful number, since it uses less digits than its factorization.

65357820800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941 (or 1924 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 65357820800 in words is "sixty-five billion, three hundred fifty-seven million, eight hundred twenty thousand, eight hundred".