65805530112 has 880 divisors, whose sum is σ = 243961787520. Its totient is φ = 17241735168.

The previous prime is 65805530111. The next prime is 65805530113. The reversal of 65805530112 is 21103550856.

It is a happy number.

65805530112 is a `hidden beast` number, since 6 + 5 + 8 + 0 + 5 + 530 + 112 = 666.

It is an interprime number because it is at equal distance from previous prime (65805530111) and next prime (65805530113).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65805530111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 582349768 + ... + 582349880.

It is an arithmetic number, because the mean of its divisors is an integer number (277229304).

Almost surely, 2^65805530112 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 65805530112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121980893760).

65805530112 is an abundant number, since it is smaller than the sum of its proper divisors (178156257408).

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

65805530112 is a wasteful number, since it uses less digits than its factorization.

65805530112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 65805530112 in words is "sixty-five billion, eight hundred five million, five hundred thirty thousand, one hundred twelve".