12992081805646 has 16 divisors (see below), whose sum is σ = 19502996669280. Its totient is φ = 6491084459040.

The previous prime is 12992081805583. The next prime is 12992081805679. The reversal of 12992081805646 is 64650818029921.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16598140 + ... + 17363248.

It is an arithmetic number, because the mean of its divisors is an integer number (1218937291830).

Almost surely, 2^{12992081805646} is an apocalyptic number.

12992081805646 is a deficient number, since it is larger than the sum of its proper divisors (6510914863634).

12992081805646 is a wasteful number, since it uses less digits than its factorization.

12992081805646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771579.

The product of its (nonzero) digits is 14929920, while the sum is 61.

The spelling of 12992081805646 in words is "twelve trillion, nine hundred ninety-two billion, eighty-one million, eight hundred five thousand, six hundred forty-six".