133061218218 has 12 divisors (see below), whose sum is σ = 288299306178. Its totient is φ = 44353739400.

The previous prime is 133061218207. The next prime is 133061218223. The reversal of 133061218218 is 812812160331.

133061218218 is a `hidden beast` number, since 1 + 3 + 3 + 0 + 612 + 18 + 21 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 92685540249 + 40375677969 = 304443^2 + 200937^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3696144933 + ... + 3696144968.

Almost surely, 2^133061218218 is an apocalyptic number.

133061218218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

133061218218 is an abundant number, since it is smaller than the sum of its proper divisors (155238087960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133061218218 is a wasteful number, since it uses less digits than its factorization.

133061218218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7392289909 (or 7392289906 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

Adding to 133061218218 its reverse (812812160331), we get a palindrome (945873378549).

The spelling of 133061218218 in words is "one hundred thirty-three billion, sixty-one million, two hundred eighteen thousand, two hundred eighteen".