12427521685108 has 6 divisors (see below), whose sum is σ = 21748162948946. Its totient is φ = 6213760842552.

The previous prime is 12427521685081. The next prime is 12427521685121. The reversal of 12427521685108 is 80158612572421.

It can be written as a sum of positive squares in only one way, i.e., 11739929144164 + 687592540944 = 3426358^2 + 829212^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1553440210635 + ... + 1553440210642.

Almost surely, 2^{12427521685108} is an apocalyptic number.

It is an amenable number.

12427521685108 is a deficient number, since it is larger than the sum of its proper divisors (9320641263838).

12427521685108 is a wasteful number, since it uses less digits than its factorization.

12427521685108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106880421281 (or 3106880421279 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 52.

The spelling of 12427521685108 in words is "twelve trillion, four hundred twenty-seven billion, five hundred twenty-one million, six hundred eighty-five thousand, one hundred eight".