65785425608 has 256 divisors, whose sum is σ = 156609331200. Its totient is φ = 25291284480.

The previous prime is 65785425581. The next prime is 65785425619. The reversal of 65785425608 is 80652458756.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 242750513 + ... + 242750783.

It is an arithmetic number, because the mean of its divisors is an integer number (611755200).

Almost surely, 2^65785425608 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 65785425608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78304665600).

65785425608 is an abundant number, since it is smaller than the sum of its proper divisors (90823905592).

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

65785425608 is a wasteful number, since it uses less digits than its factorization.

65785425608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 56.

The spelling of 65785425608 in words is "sixty-five billion, seven hundred eighty-five million, four hundred twenty-five thousand, six hundred eight".