1217306543612 has 24 divisors (see below), whose sum is σ = 2152472720496. Its totient is φ = 602315647488.

The previous prime is 1217306543591. The next prime is 1217306543627. The reversal of 1217306543612 is 2163456037121.

It is a super-3 number, since 3×1217306543612³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1217306543612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3675878 + ... + 3993330.

It is an arithmetic number, because the mean of its divisors is an integer number (89686363354).

Almost surely, 2^{1217306543612} is an apocalyptic number.

It is an amenable number.

1217306543612 is a deficient number, since it is larger than the sum of its proper divisors (935166176884).

1217306543612 is a wasteful number, since it uses less digits than its factorization.

1217306543612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327437 (or 327435 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 1217306543612 in words is "one trillion, two hundred seventeen billion, three hundred six million, five hundred forty-three thousand, six hundred twelve".