12161768047256 has 64 divisors (see below), whose sum is σ = 23211601920000. Its totient is φ = 5973221439360.

The previous prime is 12161768047249. The next prime is 12161768047283. The reversal of 12161768047256 is 65274086716121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46951265 + ... + 47209583.

It is an arithmetic number, because the mean of its divisors is an integer number (362681280000).

Almost surely, 2^{12161768047256} is an apocalyptic number.

It is an amenable number.

12161768047256 is a deficient number, since it is larger than the sum of its proper divisors (11049833872744).

12161768047256 is a wasteful number, since it uses less digits than its factorization.

12161768047256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258912 (or 258908 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 12161768047256 in words is "twelve trillion, one hundred sixty-one billion, seven hundred sixty-eight million, forty-seven thousand, two hundred fifty-six".