66305562224 has 80 divisors (see below), whose sum is σ = 144764067840. Its totient is φ = 29147040000.

The previous prime is 66305562223. The next prime is 66305562283. The reversal of 66305562224 is 42226550366.

66305562224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66305562223) 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, 10641542 + ... + 10647770.

It is an arithmetic number, because the mean of its divisors is an integer number (1809550848).

Almost surely, 2^66305562224 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 66305562224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72382033920).

66305562224 is an abundant number, since it is smaller than the sum of its proper divisors (78458505616).

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

66305562224 is a wasteful number, since it uses less digits than its factorization.

66305562224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8230 (or 8224 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 66305562224 in words is "sixty-six billion, three hundred five million, five hundred sixty-two thousand, two hundred twenty-four".