219871648842 has 8 divisors (see below), whose sum is σ = 439743297696. Its totient is φ = 73290549612.

The previous prime is 219871648831. The next prime is 219871648849. The reversal of 219871648842 is 248846178912.

219871648842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

219871648842 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (219871648849) 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 3 ways as a sum of consecutive naturals, for example, 18322637398 + ... + 18322637409.

It is an arithmetic number, because the mean of its divisors is an integer number (54967912212).

Almost surely, 2^219871648842 is an apocalyptic number.

219871648842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

219871648842 is a wasteful number, since it uses less digits than its factorization.

219871648842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36645274812.

The product of its digits is 12386304, while the sum is 60.

The spelling of 219871648842 in words is "two hundred nineteen billion, eight hundred seventy-one million, six hundred forty-eight thousand, eight hundred forty-two".