65648423808000 has 3520 divisors, whose sum is σ = 288439873413120. Its totient is φ = 14680866816000.

The previous prime is 65648423807969. The next prime is 65648423808137. The reversal of 65648423808000 is 80832484656.

65648423808000 is a `hidden beast` number, since 6 + 5 + 6 + 484 + 2 + 3 + 80 + 80 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (3520).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 76070015569 + ... + 76070016431.

It is an arithmetic number, because the mean of its divisors is an integer number (81943145856).

Almost surely, 2^{65648423808000} is an apocalyptic number.

65648423808000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65648423808000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144219936706560).

65648423808000 is an abundant number, since it is smaller than the sum of its proper divisors (222791449605120).

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

65648423808000 is a wasteful number, since it uses less digits than its factorization.

65648423808000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 54.

The spelling of 65648423808000 in words is "sixty-five trillion, six hundred forty-eight billion, four hundred twenty-three million, eight hundred eight thousand".