12071407687 has 4 divisors (see below), whose sum is σ = 12077454456. Its totient is φ = 12065360920.

The previous prime is 12071407639. The next prime is 12071407703. The reversal of 12071407687 is 78670417021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78670417021 = 7 ⋅11238631003.

It is a cyclic number.

It is not a de Polignac number, because 12071407687 - 2⁷ = 12071407559 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 (12071407637) 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, 3020389 + ... + 3024382.

It is an arithmetic number, because the mean of its divisors is an integer number (3019363614).

Almost surely, 2^12071407687 is an apocalyptic number.

12071407687 is a deficient number, since it is larger than the sum of its proper divisors (6046769).

12071407687 is an equidigital number, since it uses as much as digits as its factorization.

12071407687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6046768.

The product of its (nonzero) digits is 131712, while the sum is 43.

The spelling of 12071407687 in words is "twelve billion, seventy-one million, four hundred seven thousand, six hundred eighty-seven".