66733244533 has 4 divisors (see below), whose sum is σ = 66734002188. Its totient is φ = 66732486880.

The previous prime is 66733244531. The next prime is 66733244537. The reversal of 66733244533 is 33544233766.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 19575647569 + 47157596964 = 139913^2 + 217158^2 .

It is a cyclic number.

It is not a de Polignac number, because 66733244533 - 2¹ = 66733244531 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 (66733244531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226216 + ... + 429697.

It is an arithmetic number, because the mean of its divisors is an integer number (16683500547).

Almost surely, 2^66733244533 is an apocalyptic number.

It is an amenable number.

66733244533 is a deficient number, since it is larger than the sum of its proper divisors (757655).

66733244533 is a wasteful number, since it uses less digits than its factorization.

66733244533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757654.

The product of its digits is 3265920, while the sum is 46.

The spelling of 66733244533 in words is "sixty-six billion, seven hundred thirty-three million, two hundred forty-four thousand, five hundred thirty-three".