66633416611 has 8 divisors (see below), whose sum is σ = 66699354384. Its totient is φ = 66567514080.

The previous prime is 66633416579. The next prime is 66633416623. The reversal of 66633416611 is 11661433666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66633416611 - 2⁵ = 66633416579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66633416011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5152125 + ... + 5165041.

It is an arithmetic number, because the mean of its divisors is an integer number (8337419298).

Almost surely, 2^66633416611 is an apocalyptic number.

66633416611 is a deficient number, since it is larger than the sum of its proper divisors (65937773).

66633416611 is a wasteful number, since it uses less digits than its factorization.

66633416611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17621.

The product of its digits is 279936, while the sum is 43.

The spelling of 66633416611 in words is "sixty-six billion, six hundred thirty-three million, four hundred sixteen thousand, six hundred eleven".