12571215986 has 16 divisors (see below), whose sum is σ = 21693379200. Its totient is φ = 5351983200.

The previous prime is 12571215983. The next prime is 12571215997. The reversal of 12571215986 is 68951217521.

It is a happy number.

12571215986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12571215986.

It is not an unprimeable number, because it can be changed into a prime (12571215983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2971211 + ... + 2975438.

It is an arithmetic number, because the mean of its divisors is an integer number (1355836200).

Almost surely, 2^12571215986 is an apocalyptic number.

12571215986 is a deficient number, since it is larger than the sum of its proper divisors (9122163214).

12571215986 is a wasteful number, since it uses less digits than its factorization.

12571215986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5946809.

The product of its digits is 302400, while the sum is 47.

The spelling of 12571215986 in words is "twelve billion, five hundred seventy-one million, two hundred fifteen thousand, nine hundred eighty-six".