218133646274 has 16 divisors (see below), whose sum is σ = 329332111416. Its totient is φ = 108356476800.

The previous prime is 218133646243. The next prime is 218133646277. The reversal of 218133646274 is 472646331812.

218133646274 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 150588235249 + 67545411025 = 388057^2 + 259895^2 .

It is not an unprimeable number, because it can be changed into a prime (218133646277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2302604 + ... + 2395464.

Almost surely, 2^218133646274 is an apocalyptic number.

218133646274 is a deficient number, since it is larger than the sum of its proper divisors (111198465142).

218133646274 is a wasteful number, since it uses less digits than its factorization.

218133646274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100501.

The product of its digits is 1161216, while the sum is 47.

The spelling of 218133646274 in words is "two hundred eighteen billion, one hundred thirty-three million, six hundred forty-six thousand, two hundred seventy-four".