223644442512 has 80 divisors (see below), whose sum is σ = 597845753280. Its totient is φ = 71956416000.

The previous prime is 223644442477. The next prime is 223644442513. The reversal of 223644442512 is 215244446322.

223644442512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (223644442513) 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 15 ways as a sum of consecutive naturals, for example, 5130087 + ... + 5173497.

It is an arithmetic number, because the mean of its divisors is an integer number (7473071916).

Almost surely, 2^223644442512 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 223644442512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298922876640).

223644442512 is an abundant number, since it is smaller than the sum of its proper divisors (374201310768).

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

223644442512 is a wasteful number, since it uses less digits than its factorization.

223644442512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47152 (or 47146 counting only the distinct ones).

The product of its digits is 368640, while the sum is 39.

Adding to 223644442512 its reverse (215244446322), we get a palindrome (438888888834).

The spelling of 223644442512 in words is "two hundred twenty-three billion, six hundred forty-four million, four hundred forty-two thousand, five hundred twelve".