12078669587867 has 4 divisors (see below), whose sum is σ = 12714389039880. Its totient is φ = 11442950135856.

The previous prime is 12078669587861. The next prime is 12078669587893. The reversal of 12078669587867 is 76878596687021.

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 12078669587867 - 2⁴ = 12078669587851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12078669587791 and 12078669587800.

It is not an unprimeable number, because it can be changed into a prime (12078669587861) 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, 317859725978 + ... + 317859726015.

It is an arithmetic number, because the mean of its divisors is an integer number (3178597259970).

Almost surely, 2^{12078669587867} is an apocalyptic number.

12078669587867 is a deficient number, since it is larger than the sum of its proper divisors (635719452013).

12078669587867 is an equidigital number, since it uses as much as digits as its factorization.

12078669587867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635719452012.

The product of its (nonzero) digits is 3413975040, while the sum is 80.

The spelling of 12078669587867 in words is "twelve trillion, seventy-eight billion, six hundred sixty-nine million, five hundred eighty-seven thousand, eight hundred sixty-seven".