223544040420 has 96 divisors (see below), whose sum is σ = 628761627648. Its totient is φ = 59341767552.

The previous prime is 223544040397. The next prime is 223544040437. The reversal of 223544040420 is 24040445322.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25669707 + ... + 25678413.

It is an arithmetic number, because the mean of its divisors is an integer number (6549600288).

Almost surely, 2^223544040420 is an apocalyptic number.

223544040420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223544040420 is an abundant number, since it is smaller than the sum of its proper divisors (405217587228).

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

223544040420 is a wasteful number, since it uses less digits than its factorization.

223544040420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10609 (or 10607 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 30.

Adding to 223544040420 its reverse (24040445322), we get a palindrome (247584485742).

The spelling of 223544040420 in words is "two hundred twenty-three billion, five hundred forty-four million, forty thousand, four hundred twenty".