218453982950 has 72 divisors (see below), whose sum is σ = 497540197800. Its totient is φ = 70956466560.

The previous prime is 218453982941. The next prime is 218453982953. The reversal of 218453982950 is 59289354812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218453982953) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2299895 + ... + 2392994.

It is an arithmetic number, because the mean of its divisors is an integer number (6910280525).

Almost surely, 2^218453982950 is an apocalyptic number.

218453982950 is an abundant number, since it is smaller than the sum of its proper divisors (279086214850).

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

218453982950 is a wasteful number, since it uses less digits than its factorization.

218453982950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4692934 (or 4692922 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 56.

The spelling of 218453982950 in words is "two hundred eighteen billion, four hundred fifty-three million, nine hundred eighty-two thousand, nine hundred fifty".