12402472685517 has 12 divisors (see below), whose sum is σ = 17914765603644. Its totient is φ = 8268276891840.

The previous prime is 12402472685497. The next prime is 12402472685531. The reversal of 12402472685517 is 71558627420421.

12402472685517 is a `hidden beast` number, since 1 + 2 + 4 + 0 + 2 + 47 + 2 + 6 + 85 + 517 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9684257698116 + 2718214987401 = 3111954^2 + 1648701^2 .

It is not a de Polignac number, because 12402472685517 - 2¹² = 12402472681421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12402472685587) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1056534 + ... + 5091287.

It is an arithmetic number, because the mean of its divisors is an integer number (1492897133637).

Almost surely, 2^{12402472685517} is an apocalyptic number.

It is an amenable number.

12402472685517 is a deficient number, since it is larger than the sum of its proper divisors (5512292918127).

12402472685517 is a wasteful number, since it uses less digits than its factorization.

12402472685517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6371980 (or 6371977 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 54.

The spelling of 12402472685517 in words is "twelve trillion, four hundred two billion, four hundred seventy-two million, six hundred eighty-five thousand, five hundred seventeen".