205612400106656 has 24 divisors (see below), whose sum is σ = 404801570828340. Its totient is φ = 102805651959808.

The previous prime is 205612400106577. The next prime is 205612400106691. The reversal of 205612400106656 is 656601004216502.

It can be written as a sum of positive squares in 2 ways, for example, as 192874210823056 + 12738189283600 = 13887916^2 + 3569060^2 .

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, 10998131 + ... + 23069106.

Almost surely, 2^{205612400106656} is an apocalyptic number.

It is an amenable number.

205612400106656 is a deficient number, since it is larger than the sum of its proper divisors (199189170721684).

205612400106656 is a wasteful number, since it uses less digits than its factorization.

205612400106656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34255856 (or 34255848 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 205612400106656 in words is "two hundred five trillion, six hundred twelve billion, four hundred million, one hundred six thousand, six hundred fifty-six".