218449254845 has 8 divisors (see below), whose sum is σ = 262143492864. Its totient is φ = 174756479184.

The previous prime is 218449254811. The next prime is 218449254923. The reversal of 218449254845 is 548452944812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 218449254845 - 2¹² = 218449250749 is a prime.

It is a Duffinian number.

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, 4529 + ... + 660998.

It is an arithmetic number, because the mean of its divisors is an integer number (32767936608).

Almost surely, 2^218449254845 is an apocalyptic number.

It is an amenable number.

218449254845 is a deficient number, since it is larger than the sum of its proper divisors (43694238019).

218449254845 is an equidigital number, since it uses as much as digits as its factorization.

218449254845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731179.

The product of its digits is 14745600, while the sum is 56.

The spelling of 218449254845 in words is "two hundred eighteen billion, four hundred forty-nine million, two hundred fifty-four thousand, eight hundred forty-five".