223545403440 has 60 divisors (see below), whose sum is σ = 750739982304. Its totient is φ = 59612107392.

The previous prime is 223545403369. The next prime is 223545403463. The reversal of 223545403440 is 44304545322.

223545403440 is a `hidden beast` number, since 2 + 2 + 3 + 545 + 40 + 34 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 223545403395 and 223545403404.

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, 155239144 + ... + 155240583.

Almost surely, 2^223545403440 is an apocalyptic number.

223545403440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223545403440 is an abundant number, since it is smaller than the sum of its proper divisors (527194578864).

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

223545403440 is a wasteful number, since it uses less digits than its factorization.

223545403440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310479746 (or 310479737 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 36.

Adding to 223545403440 its reverse (44304545322), we get a palindrome (267849948762).

The spelling of 223545403440 in words is "two hundred twenty-three billion, five hundred forty-five million, four hundred three thousand, four hundred forty".