66444025230 has 192 divisors, whose sum is σ = 190980840960. Its totient is φ = 15893625600.

The previous prime is 66444025189. The next prime is 66444025237. The reversal of 66444025230 is 3252044466.

66444025230 is a `hidden beast` number, since 6 + 644 + 4 + 0 + 2 + 5 + 2 + 3 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66444025237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23805135 + ... + 23807925.

It is an arithmetic number, because the mean of its divisors is an integer number (994691880).

Almost surely, 2^66444025230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66444025230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95490420480).

66444025230 is an abundant number, since it is smaller than the sum of its proper divisors (124536815730).

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

66444025230 is a wasteful number, since it uses less digits than its factorization.

66444025230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127 (or 3124 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 66444025230 its reverse (3252044466), we get a palindrome (69696069696).

The spelling of 66444025230 in words is "sixty-six billion, four hundred forty-four million, twenty-five thousand, two hundred thirty".