223557913573 has 4 divisors (see below), whose sum is σ = 227775987468. Its totient is φ = 219339839680.

The previous prime is 223557913571. The next prime is 223557913627. The reversal of 223557913573 is 375319755322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 196672736484 + 26885177089 = 443478^2 + 163967^2 .

It is a cyclic number.

It is not a de Polignac number, because 223557913573 - 2¹ = 223557913571 is a prime.

It is a super-2 number, since 2×223557913573² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223557913573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223557913571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2109036868 + ... + 2109036973.

It is an arithmetic number, because the mean of its divisors is an integer number (56943996867).

Almost surely, 2^223557913573 is an apocalyptic number.

It is an amenable number.

223557913573 is a deficient number, since it is larger than the sum of its proper divisors (4218073895).

223557913573 is an equidigital number, since it uses as much as digits as its factorization.

223557913573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4218073894.

The product of its digits is 5953500, while the sum is 52.

The spelling of 223557913573 in words is "two hundred twenty-three billion, five hundred fifty-seven million, nine hundred thirteen thousand, five hundred seventy-three".