12183785855 has 16 divisors (see below), whose sum is σ = 14873362560. Its totient is φ = 9578594208.

The previous prime is 12183785821. The next prime is 12183785857. The reversal of 12183785855 is 55858738121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12183785855 - 2⁸ = 12183785599 is a prime.

It is a super-3 number, since 3×12183785855³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12183785797 and 12183785806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12183785857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1258664 + ... + 1268306.

It is an arithmetic number, because the mean of its divisors is an integer number (929585160).

Almost surely, 2^12183785855 is an apocalyptic number.

12183785855 is a deficient number, since it is larger than the sum of its proper divisors (2689576705).

12183785855 is an equidigital number, since it uses as much as digits as its factorization.

12183785855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13990.

The product of its digits is 2688000, while the sum is 53.

The spelling of 12183785855 in words is "twelve billion, one hundred eighty-three million, seven hundred eighty-five thousand, eight hundred fifty-five".