218419319042 has 4 divisors (see below), whose sum is σ = 327628978566. Its totient is φ = 109209659520.

The previous prime is 218419319023. The next prime is 218419319047. The reversal of 218419319042 is 240913914812.

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

It can be written as a sum of positive squares in only one way, i.e., 167591165641 + 50828153401 = 409379^2 + 225451^2 .

It is a junction number, because it is equal to n+sod(n) for n = 218419318984 and 218419319002.

It is not an unprimeable number, because it can be changed into a prime (218419319047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54604829759 + ... + 54604829762.

Almost surely, 2^218419319042 is an apocalyptic number.

218419319042 is a deficient number, since it is larger than the sum of its proper divisors (109209659524).

218419319042 is a wasteful number, since it uses less digits than its factorization.

218419319042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109209659523.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 218419319042 in words is "two hundred eighteen billion, four hundred nineteen million, three hundred nineteen thousand, forty-two".