66430742224 has 80 divisors (see below), whose sum is σ = 160840955520. Its totient is φ = 25822126080.

The previous prime is 66430742171. The next prime is 66430742227. The reversal of 66430742224 is 42224703466.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66430742227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 471192 + ... + 595720.

It is an arithmetic number, because the mean of its divisors is an integer number (2010511944).

Almost surely, 2^66430742224 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 66430742224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80420477760).

66430742224 is an abundant number, since it is smaller than the sum of its proper divisors (94410213296).

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

66430742224 is a wasteful number, since it uses less digits than its factorization.

66430742224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124988 (or 124982 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 40.

The spelling of 66430742224 in words is "sixty-six billion, four hundred thirty million, seven hundred forty-two thousand, two hundred twenty-four".