223105904656 has 10 divisors (see below), whose sum is σ = 432267690302. Its totient is φ = 111552952320.

The previous prime is 223105904647. The next prime is 223105904657. The reversal of 223105904656 is 656409501322.

It can be written as a sum of positive squares in only one way, i.e., 130942659600 + 92163245056 = 361860^2 + 303584^2 .

It is a super-3 number, since 3×223105904656³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (223105904657) by changing a digit.

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 as a sum of consecutive naturals, namely, 6972059505 + ... + 6972059536.

Almost surely, 2^223105904656 is an apocalyptic number.

It is an amenable number.

223105904656 is a deficient number, since it is larger than the sum of its proper divisors (209161785646).

223105904656 is a wasteful number, since it uses less digits than its factorization.

223105904656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13944119049 (or 13944119043 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 223105904656 in words is "two hundred twenty-three billion, one hundred five million, nine hundred four thousand, six hundred fifty-six".