12605105085066 has 24 divisors (see below), whose sum is σ = 29411911865700. Its totient is φ = 3878493872256.

The previous prime is 12605105085043. The next prime is 12605105085107. The reversal of 12605105085066 is 66058050150621.

12605105085066 is a `hidden beast` number, since 1 + 2 + 6 + 0 + 510 + 50 + 85 + 0 + 6 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11297524270041 + 1307580815025 = 3361179^2 + 1143495^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26933984991 + ... + 26933985458.

Almost surely, 2^{12605105085066} is an apocalyptic number.

12605105085066 is an abundant number, since it is smaller than the sum of its proper divisors (16806806780634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12605105085066 is a wasteful number, since it uses less digits than its factorization.

12605105085066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53867970470 (or 53867970467 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 12605105085066 in words is "twelve trillion, six hundred five billion, one hundred five million, eighty-five thousand, sixty-six".