66478442300 has 18 divisors (see below), whose sum is σ = 144258220008. Its totient is φ = 26591376880.

The previous prime is 66478442273. The next prime is 66478442347. The reversal of 66478442300 is 324487466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 332392112 + ... + 332392311.

It is an arithmetic number, because the mean of its divisors is an integer number (8014345556).

Almost surely, 2^66478442300 is an apocalyptic number.

It is an amenable number.

66478442300 is an abundant number, since it is smaller than the sum of its proper divisors (77779777708).

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

66478442300 is a wasteful number, since it uses less digits than its factorization.

66478442300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664784437 (or 664784430 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 44.

The spelling of 66478442300 in words is "sixty-six billion, four hundred seventy-eight million, four hundred forty-two thousand, three hundred".