12711166858172 has 24 divisors (see below), whose sum is σ = 22449142420320. Its totient is φ = 6297128879040.

The previous prime is 12711166858151. The next prime is 12711166858207. The reversal of 12711166858172 is 27185866111721.

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, 19801553 + ... + 20433399.

It is an arithmetic number, because the mean of its divisors is an integer number (935380934180).

Almost surely, 2^{12711166858172} is an apocalyptic number.

It is an amenable number.

12711166858172 is a deficient number, since it is larger than the sum of its proper divisors (9737975562148).

12711166858172 is a wasteful number, since it uses less digits than its factorization.

12711166858172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678101 (or 678099 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 56.

The spelling of 12711166858172 in words is "twelve trillion, seven hundred eleven billion, one hundred sixty-six million, eight hundred fifty-eight thousand, one hundred seventy-two".