12223655656536 has 16 divisors (see below), whose sum is σ = 30559139141400. Its totient is φ = 4074551885504.

The previous prime is 12223655656507. The next prime is 12223655656559. The reversal of 12223655656536 is 63565655632221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254659492821 + ... + 254659492868.

Almost surely, 2^{12223655656536} is an apocalyptic number.

It is an amenable number.

12223655656536 is an abundant number, since it is smaller than the sum of its proper divisors (18335483484864).

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

12223655656536 is a wasteful number, since it uses less digits than its factorization.

12223655656536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509318985698 (or 509318985694 counting only the distinct ones).

The product of its digits is 58320000, while the sum is 57.

The spelling of 12223655656536 in words is "twelve trillion, two hundred twenty-three billion, six hundred fifty-five million, six hundred fifty-six thousand, five hundred thirty-six".