65255585472 has 336 divisors, whose sum is σ = 241838268672. Its totient is φ = 16949191680.

The previous prime is 65255585471. The next prime is 65255585489. The reversal of 65255585472 is 27458555256.

65255585472 is a `hidden beast` number, since 6 + 5 + 2 + 55 + 585 + 4 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

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

It is not an unprimeable number, because it can be changed into a prime (65255585471) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1170258 + ... + 1224750.

It is an arithmetic number, because the mean of its divisors is an integer number (719756752).

Almost surely, 2^65255585472 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 65255585472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120919134336).

65255585472 is an abundant number, since it is smaller than the sum of its proper divisors (176582683200).

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

65255585472 is a wasteful number, since it uses less digits than its factorization.

65255585472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54538 (or 54516 counting only the distinct ones).

The product of its digits is 16800000, while the sum is 54.

The spelling of 65255585472 in words is "sixty-five billion, two hundred fifty-five million, five hundred eighty-five thousand, four hundred seventy-two".