223545232561504 has 72 divisors (see below), whose sum is σ = 511961798890080. Its totient is φ = 95804482588416.

The previous prime is 223545232561499. The next prime is 223545232561577. The reversal of 223545232561504 is 405165232545322.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 309961129 + ... + 310681495.

It is an arithmetic number, because the mean of its divisors is an integer number (7110580540140).

Almost surely, 2^{223545232561504} is an apocalyptic number.

It is an amenable number.

223545232561504 is an abundant number, since it is smaller than the sum of its proper divisors (288416566328576).

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

223545232561504 is a wasteful number, since it uses less digits than its factorization.

223545232561504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918300 (or 918285 counting only the distinct ones).

The product of its (nonzero) digits is 8640000, while the sum is 49.

The spelling of 223545232561504 in words is "two hundred twenty-three trillion, five hundred forty-five billion, two hundred thirty-two million, five hundred sixty-one thousand, five hundred four".