223387504128 has 160 divisors (see below), whose sum is σ = 664573536000. Its totient is φ = 74087405568.

The previous prime is 223387504099. The next prime is 223387504129. The reversal of 223387504128 is 821405783322.

223387504128 is a `hidden beast` number, since 22 + 33 + 87 + 504 + 12 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223387504129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2710375 + ... + 2791577.

It is an arithmetic number, because the mean of its divisors is an integer number (4153584600).

Almost surely, 2^223387504128 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 223387504128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332286768000).

223387504128 is an abundant number, since it is smaller than the sum of its proper divisors (441186031872).

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

223387504128 is an equidigital number, since it uses as much as digits as its factorization.

223387504128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81429 (or 81407 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 223387504128 in words is "two hundred twenty-three billion, three hundred eighty-seven million, five hundred four thousand, one hundred twenty-eight".