66203304056 has 32 divisors (see below), whose sum is σ = 134195898000. Its totient is φ = 30511904256.

The previous prime is 66203304049. The next prime is 66203304077. The reversal of 66203304056 is 65040330266.

It is a super-2 number, since 2×66203304056² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5880161 + ... + 5891408.

Almost surely, 2^66203304056 is an apocalyptic number.

It is an amenable number.

66203304056 is an abundant number, since it is smaller than the sum of its proper divisors (67992593944).

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

66203304056 is a wasteful number, since it uses less digits than its factorization.

66203304056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11771631 (or 11771627 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 35.

The spelling of 66203304056 in words is "sixty-six billion, two hundred three million, three hundred four thousand, fifty-six".