66563386333 has 4 divisors (see below), whose sum is σ = 66569184448. Its totient is φ = 66557588220.

The previous prime is 66563386319. The next prime is 66563386397. The reversal of 66563386333 is 33368336566.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66563386333 - 2⁵ = 66563386301 is a prime.

It is a super-3 number, since 3×66563386333³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66563386303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2881803 + ... + 2904808.

It is an arithmetic number, because the mean of its divisors is an integer number (16642296112).

Almost surely, 2^66563386333 is an apocalyptic number.

It is an amenable number.

66563386333 is a deficient number, since it is larger than the sum of its proper divisors (5798115).

66563386333 is a wasteful number, since it uses less digits than its factorization.

66563386333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798114.

The product of its digits is 12597120, while the sum is 52.

The spelling of 66563386333 in words is "sixty-six billion, five hundred sixty-three million, three hundred eighty-six thousand, three hundred thirty-three".