66366506333 has 4 divisors (see below), whose sum is σ = 68507361408. Its totient is φ = 64225651260.

The previous prime is 66366506299. The next prime is 66366506383. The reversal of 66366506333 is 33360566366.

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 a de Polignac number, because none of the positive numbers 2^k-66366506333 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 (66366506383) 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 3 ways as a sum of consecutive naturals, for example, 1070427491 + ... + 1070427552.

It is an arithmetic number, because the mean of its divisors is an integer number (17126840352).

Almost surely, 2^66366506333 is an apocalyptic number.

It is an amenable number.

66366506333 is a deficient number, since it is larger than the sum of its proper divisors (2140855075).

66366506333 is a wasteful number, since it uses less digits than its factorization.

66366506333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140855074.

The product of its (nonzero) digits is 3149280, while the sum is 47.

The spelling of 66366506333 in words is "sixty-six billion, three hundred sixty-six million, five hundred six thousand, three hundred thirty-three".