223744425520 has 80 divisors (see below), whose sum is σ = 648568274688. Its totient is φ = 69738520320.

The previous prime is 223744425517. The next prime is 223744425547. The reversal of 223744425520 is 25524447322.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

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 15 ways as a sum of consecutive naturals, for example, 18154914 + ... + 18167233.

Almost surely, 2^223744425520 is an apocalyptic number.

223744425520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223744425520 is an abundant number, since it is smaller than the sum of its proper divisors (424823849168).

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

223744425520 is a wasteful number, since it uses less digits than its factorization.

223744425520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36322178 (or 36322172 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 40.

The spelling of 223744425520 in words is "two hundred twenty-three billion, seven hundred forty-four million, four hundred twenty-five thousand, five hundred twenty".