66281492232 has 36 divisors (see below), whose sum is σ = 179518291485. Its totient is φ = 22093102560.

The previous prime is 66281492209. The next prime is 66281492237. The reversal of 66281492232 is 23229418266.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

66281492232 is a `hidden beast` number, since 6 + 62 + 81 + 492 + 23 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 57689314596 + 8592177636 = 240186^2 + 92694^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=182046.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (66281492237) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2169382 + ... + 2199722.

Almost surely, 2^66281492232 is an apocalyptic number.

It is an amenable number.

66281492232 is an abundant number, since it is smaller than the sum of its proper divisors (113236799253).

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

66281492232 is an frugal number, since it uses more digits than its factorization.

66281492232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60694 (or 30346 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The spelling of 66281492232 in words is "sixty-six billion, two hundred eighty-one million, four hundred ninety-two thousand, two hundred thirty-two".