65636789472 has 288 divisors, whose sum is σ = 206308982880. Its totient is φ = 19701104640.

The previous prime is 65636789467. The next prime is 65636789507. The reversal of 65636789472 is 27498763656.

65636789472 is a `hidden beast` number, since 6 + 56 + 36 + 7 + 89 + 472 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is an alternating number because its digits alternate between even and odd.

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, 16042147 + ... + 16046237.

It is an arithmetic number, because the mean of its divisors is an integer number (716350635).

Almost surely, 2^65636789472 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 65636789472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103154491440).

65636789472 is an abundant number, since it is smaller than the sum of its proper divisors (140672193408).

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

65636789472 is a wasteful number, since it uses less digits than its factorization.

65636789472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266 (or 4255 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 63.

The spelling of 65636789472 in words is "sixty-five billion, six hundred thirty-six million, seven hundred eighty-nine thousand, four hundred seventy-two".