1223664223546 has 16 divisors (see below), whose sum is σ = 1847885931360. Its totient is φ = 607715990640.

The previous prime is 1223664223543. The next prime is 1223664223571. The reversal of 1223664223546 is 6453224663221.

It is a junction number, because it is equal to n+sod(n) for n = 1223664223496 and 1223664223505.

It is not an unprimeable number, because it can be changed into a prime (1223664223543) 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, 3257676 + ... + 3613831.

It is an arithmetic number, because the mean of its divisors is an integer number (115492870710).

Almost surely, 2^{1223664223546} is an apocalyptic number.

1223664223546 is a deficient number, since it is larger than the sum of its proper divisors (624221707814).

1223664223546 is a wasteful number, since it uses less digits than its factorization.

1223664223546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6872109.

The product of its digits is 2488320, while the sum is 46.

Adding to 1223664223546 its reverse (6453224663221), we get a palindrome (7676888886767).

The spelling of 1223664223546 in words is "one trillion, two hundred twenty-three billion, six hundred sixty-four million, two hundred twenty-three thousand, five hundred forty-six".