12442412687 has 4 divisors (see below), whose sum is σ = 12442794216. Its totient is φ = 12442031160.

The previous prime is 12442412579. The next prime is 12442412701. The reversal of 12442412687 is 78621424421.

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 12442412687 - 2²² = 12438218383 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 (12442418687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136748 + ... + 208769.

It is an arithmetic number, because the mean of its divisors is an integer number (3110698554).

Almost surely, 2^12442412687 is an apocalyptic number.

12442412687 is a deficient number, since it is larger than the sum of its proper divisors (381529).

12442412687 is an equidigital number, since it uses as much as digits as its factorization.

12442412687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381528.

The product of its digits is 172032, while the sum is 41.

The spelling of 12442412687 in words is "twelve billion, four hundred forty-two million, four hundred twelve thousand, six hundred eighty-seven".