666006355552 has 24 divisors (see below), whose sum is σ = 1311311753136. Its totient is φ = 332974799232.

The previous prime is 666006355543. The next prime is 666006355583. The reversal of 666006355552 is 255553600666.

It is a junction number, because it is equal to n+sod(n) for n = 666006355496 and 666006355505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502908 + ... + 1258939.

It is an arithmetic number, because the mean of its divisors is an integer number (54637989714).

Almost surely, 2^666006355552 is an apocalyptic number.

It is an amenable number.

666006355552 is a deficient number, since it is larger than the sum of its proper divisors (645305397584).

666006355552 is a wasteful number, since it uses less digits than its factorization.

666006355552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773670 (or 1773662 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 49.

The spelling of 666006355552 in words is "six hundred sixty-six billion, six million, three hundred fifty-five thousand, five hundred fifty-two".