66436005233 has 72 divisors (see below), whose sum is σ = 78109436160. Its totient is φ = 56403060480.

The previous prime is 66436005221. The next prime is 66436005271. The reversal of 66436005233 is 33250063466.

It is not a de Polignac number, because 66436005233 - 2¹⁰ = 66436004209 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 (66436005133) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 423159191 + ... + 423159347.

It is an arithmetic number, because the mean of its divisors is an integer number (1084853280).

Almost surely, 2^66436005233 is an apocalyptic number.

It is an amenable number.

66436005233 is a deficient number, since it is larger than the sum of its proper divisors (11673430927).

66436005233 is a wasteful number, since it uses less digits than its factorization.

66436005233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 38.

Adding to 66436005233 its reverse (33250063466), we get a palindrome (99686068699).

The spelling of 66436005233 in words is "sixty-six billion, four hundred thirty-six million, five thousand, two hundred thirty-three".