223438889670912 has 504 divisors, whose sum is σ = 675023212523520. Its totient is φ = 73778454097920.

The previous prime is 223438889670907. The next prime is 223438889670959. The reversal of 223438889670912 is 219076988834322.

223438889670912 is a `hidden beast` number, since 2 + 2 + 3 + 4 + 388 + 8 + 96 + 70 + 91 + 2 = 666.

223438889670912 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 9698277889 + ... + 9698300927.

It is an arithmetic number, because the mean of its divisors is an integer number (1339331770880).

Almost surely, 2^{223438889670912} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223438889670912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337511606261760).

223438889670912 is an abundant number, since it is smaller than the sum of its proper divisors (451584322852608).

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

223438889670912 is an equidigital number, since it uses as much as digits as its factorization.

223438889670912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23561 (or 23532 counting only the distinct ones).

The product of its (nonzero) digits is 501645312, while the sum is 72.

The spelling of 223438889670912 in words is "two hundred twenty-three trillion, four hundred thirty-eight billion, eight hundred eighty-nine million, six hundred seventy thousand, nine hundred twelve".