8518066664333 has 4 divisors (see below), whose sum is σ = 8521445511228. Its totient is φ = 8514687817440.

The previous prime is 8518066664293. The next prime is 8518066664339. The reversal of 8518066664333 is 3334666608158.

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

It can be written as a sum of positive squares in 2 ways, for example, as 546236290084 + 7971830374249 = 739078^2 + 2823443^2 .

It is a cyclic number.

It is not a de Polignac number, because 8518066664333 - 2⁸ = 8518066664077 is a prime.

It is a super-2 number, since 2×8518066664333² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8518066664339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1689419666 + ... + 1689424707.

It is an arithmetic number, because the mean of its divisors is an integer number (2130361377807).

Almost surely, 2^{8518066664333} is an apocalyptic number.

It is an amenable number.

8518066664333 is a deficient number, since it is larger than the sum of its proper divisors (3378846895).

8518066664333 is a wasteful number, since it uses less digits than its factorization.

8518066664333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378846894.

The product of its (nonzero) digits is 44789760, while the sum is 59.

The spelling of 8518066664333 in words is "eight trillion, five hundred eighteen billion, sixty-six million, six hundred sixty-four thousand, three hundred thirty-three".