12186355855 has 4 divisors (see below), whose sum is σ = 14623627032. Its totient is φ = 9749084680.

The previous prime is 12186355847. The next prime is 12186355859. The reversal of 12186355855 is 55855368121.

12186355855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12186355855 - 2³ = 12186355847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12186355799 and 12186355808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12186355859) 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 3 ways as a sum of consecutive naturals, for example, 1218635581 + ... + 1218635590.

It is an arithmetic number, because the mean of its divisors is an integer number (3655906758).

Almost surely, 2^12186355855 is an apocalyptic number.

12186355855 is a deficient number, since it is larger than the sum of its proper divisors (2437271177).

12186355855 is an equidigital number, since it uses as much as digits as its factorization.

12186355855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2437271176.

The product of its digits is 1440000, while the sum is 49.

The spelling of 12186355855 in words is "twelve billion, one hundred eighty-six million, three hundred fifty-five thousand, eight hundred fifty-five".