65765048800 has 216 divisors, whose sum is σ = 177125960088. Its totient is φ = 23825894400.

The previous prime is 65765048773. The next prime is 65765048813. The reversal of 65765048800 is 884056756.

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 35 ways as a sum of consecutive naturals, for example, 29716494 + ... + 29718706.

It is an arithmetic number, because the mean of its divisors is an integer number (820027593).

Almost surely, 2^65765048800 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 65765048800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88562980044).

65765048800 is an abundant number, since it is smaller than the sum of its proper divisors (111360911288).

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

65765048800 is a wasteful number, since it uses less digits than its factorization.

65765048800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562 (or 2538 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 65765048800 in words is "sixty-five billion, seven hundred sixty-five million, forty-eight thousand, eight hundred".