66533404205 has 8 divisors (see below), whose sum is σ = 79845388800. Its totient is φ = 53223187536.

The previous prime is 66533404117. The next prime is 66533404229. The reversal of 66533404205 is 50240433566.

It is a happy number.

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 66533404205 - 2⁸ = 66533403949 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357725 + ... + 510914.

It is an arithmetic number, because the mean of its divisors is an integer number (9980673600).

Almost surely, 2^66533404205 is an apocalyptic number.

It is an amenable number.

66533404205 is a deficient number, since it is larger than the sum of its proper divisors (13311984595).

66533404205 is a wasteful number, since it uses less digits than its factorization.

66533404205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883963.

The product of its (nonzero) digits is 259200, while the sum is 38.

The spelling of 66533404205 in words is "sixty-six billion, five hundred thirty-three million, four hundred four thousand, two hundred five".