218453690568604 has 24 divisors (see below), whose sum is σ = 400482540561600. Its totient is φ = 104125460537280.

The previous prime is 218453690568599. The next prime is 218453690568611. The reversal of 218453690568604 is 406865096354812.

It is a self number, because there is not a number n which added to its sum of digits gives 218453690568604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11919114067 + ... + 11919132394.

It is an arithmetic number, because the mean of its divisors is an integer number (16686772523400).

Almost surely, 2^{218453690568604} is an apocalyptic number.

It is an amenable number.

218453690568604 is a deficient number, since it is larger than the sum of its proper divisors (182028849992996).

218453690568604 is a wasteful number, since it uses less digits than its factorization.

218453690568604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23838246573 (or 23838246571 counting only the distinct ones).

The product of its (nonzero) digits is 298598400, while the sum is 67.

The spelling of 218453690568604 in words is "two hundred eighteen trillion, four hundred fifty-three billion, six hundred ninety million, five hundred sixty-eight thousand, six hundred four".