66473241228 has 72 divisors (see below), whose sum is σ = 173926378080. Its totient is φ = 21381050880.

The previous prime is 66473241209. The next prime is 66473241251. The reversal of 66473241228 is 82214237466.

It is a happy number.

66473241228 is a `hidden beast` number, since 66 + 47 + 324 + 1 + 228 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1837273 + ... + 1873103.

It is an arithmetic number, because the mean of its divisors is an integer number (2415644140).

Almost surely, 2^66473241228 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 66473241228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86963189040).

66473241228 is an abundant number, since it is smaller than the sum of its proper divisors (107453136852).

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

66473241228 is a wasteful number, since it uses less digits than its factorization.

66473241228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37647 (or 37642 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The spelling of 66473241228 in words is "sixty-six billion, four hundred seventy-three million, two hundred forty-one thousand, two hundred twenty-eight".