219745868676 has 12 divisors (see below), whose sum is σ = 512740360272. Its totient is φ = 73248622888.

The previous prime is 219745868651. The next prime is 219745868687. The reversal of 219745868676 is 676868547912.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 219745868676.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9156077850 + ... + 9156077873.

It is an arithmetic number, because the mean of its divisors is an integer number (42728363356).

Almost surely, 2^219745868676 is an apocalyptic number.

It is an amenable number.

219745868676 is an abundant number, since it is smaller than the sum of its proper divisors (292994491596).

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

219745868676 is a wasteful number, since it uses less digits than its factorization.

219745868676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18312155730 (or 18312155728 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 69.

The spelling of 219745868676 in words is "two hundred nineteen billion, seven hundred forty-five million, eight hundred sixty-eight thousand, six hundred seventy-six".