65783808000 has 720 divisors, whose sum is σ = 245604655296. Its totient is φ = 16927948800.

The previous prime is 65783807989. The next prime is 65783808011. The reversal of 65783808000 is 80838756.

It is an interprime number because it is at equal distance from previous prime (65783807989) and next prime (65783808011).

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 792575959 + ... + 792576041.

Almost surely, 2^65783808000 is an apocalyptic number.

65783808000 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 65783808000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122802327648).

65783808000 is an abundant number, since it is smaller than the sum of its proper divisors (179820847296).

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

65783808000 is an equidigital number, since it uses as much as digits as its factorization.

65783808000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 65783808000 in words is "sixty-five billion, seven hundred eighty-three million, eight hundred eight thousand".