666303012533 has 16 divisors (see below), whose sum is σ = 704678768640. Its totient is φ = 628263961200.

The previous prime is 666303012517. The next prime is 666303012563. The reversal of 666303012533 is 335210303666.

It is a cyclic number.

It is not a de Polignac number, because 666303012533 - 2⁴ = 666303012517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666303012563) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3947948 + ... + 4113258.

It is an arithmetic number, because the mean of its divisors is an integer number (44042423040).

Almost surely, 2^666303012533 is an apocalyptic number.

It is an amenable number.

666303012533 is a deficient number, since it is larger than the sum of its proper divisors (38375756107).

666303012533 is a wasteful number, since it uses less digits than its factorization.

666303012533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166328.

The product of its (nonzero) digits is 174960, while the sum is 38.

The spelling of 666303012533 in words is "six hundred sixty-six billion, three hundred three million, twelve thousand, five hundred thirty-three".