12185880854 has 24 divisors (see below), whose sum is σ = 21757617288. Its totient is φ = 5101064640.

The previous prime is 12185880853. The next prime is 12185880871. The reversal of 12185880854 is 45808858121.

12185880854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12185880853) 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 11 ways as a sum of consecutive naturals, for example, 1441667 + ... + 1450094.

It is an arithmetic number, because the mean of its divisors is an integer number (906567387).

Almost surely, 2^12185880854 is an apocalyptic number.

12185880854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12185880854 is a deficient number, since it is larger than the sum of its proper divisors (9571736434).

12185880854 is a wasteful number, since it uses less digits than its factorization.

12185880854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891820 (or 2891813 counting only the distinct ones).

The product of its (nonzero) digits is 819200, while the sum is 50.

The spelling of 12185880854 in words is "twelve billion, one hundred eighty-five million, eight hundred eighty thousand, eight hundred fifty-four".