163223323566 has 16 divisors (see below), whose sum is σ = 340639979904. Its totient is φ = 52042219064.

The previous prime is 163223323553. The next prime is 163223323567. The reversal of 163223323566 is 665323322361.

It is a super-2 number, since 2×163223323566² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163223323567) 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 in 7 ways as a sum of consecutive naturals, for example, 591388716 + ... + 591388991.

It is an arithmetic number, because the mean of its divisors is an integer number (21289998744).

Almost surely, 2^163223323566 is an apocalyptic number.

163223323566 is an abundant number, since it is smaller than the sum of its proper divisors (177416656338).

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

163223323566 is a wasteful number, since it uses less digits than its factorization.

163223323566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182777735.

The product of its digits is 699840, while the sum is 42.

The spelling of 163223323566 in words is "one hundred sixty-three billion, two hundred twenty-three million, three hundred twenty-three thousand, five hundred sixty-six".