12432166687 has 4 divisors (see below), whose sum is σ = 12860862120. Its totient is φ = 12003471256.

The previous prime is 12432166667. The next prime is 12432166693. The reversal of 12432166687 is 78666123421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12432166687 - 2⁷ = 12432166559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432166667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214347673 + ... + 214347730.

It is an arithmetic number, because the mean of its divisors is an integer number (3215215530).

Almost surely, 2^12432166687 is an apocalyptic number.

12432166687 is a deficient number, since it is larger than the sum of its proper divisors (428695433).

12432166687 is an equidigital number, since it uses as much as digits as its factorization.

12432166687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428695432.

The product of its digits is 580608, while the sum is 46.

The spelling of 12432166687 in words is "twelve billion, four hundred thirty-two million, one hundred sixty-six thousand, six hundred eighty-seven".