66653443050 has 48 divisors (see below), whose sum is σ = 174000574560. Its totient is φ = 16838763840.

The previous prime is 66653443013. The next prime is 66653443093. The reversal of 66653443050 is 5034435666.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66653442993 and 66653443011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11690737 + ... + 11696436.

It is an arithmetic number, because the mean of its divisors is an integer number (3625011970).

Almost surely, 2^66653443050 is an apocalyptic number.

66653443050 is an abundant number, since it is smaller than the sum of its proper divisors (107347131510).

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

66653443050 is a wasteful number, since it uses less digits than its factorization.

66653443050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23387207 (or 23387202 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 66653443050 in words is "sixty-six billion, six hundred fifty-three million, four hundred forty-three thousand, fifty".