66133416263 has 4 divisors (see below), whose sum is σ = 66134434680. Its totient is φ = 66132397848.

The previous prime is 66133416259. The next prime is 66133416289. The reversal of 66133416263 is 36261433166.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66133416263 - 2² = 66133416259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66133416263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66133416203) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 404645 + ... + 544062.

It is an arithmetic number, because the mean of its divisors is an integer number (16533608670).

Almost surely, 2^66133416263 is an apocalyptic number.

66133416263 is a deficient number, since it is larger than the sum of its proper divisors (1018417).

66133416263 is an equidigital number, since it uses as much as digits as its factorization.

66133416263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018416.

The product of its digits is 279936, while the sum is 41.

The spelling of 66133416263 in words is "sixty-six billion, one hundred thirty-three million, four hundred sixteen thousand, two hundred sixty-three".