12181841208 has 32 divisors (see below), whose sum is σ = 33838448400. Its totient is φ = 4060613664.

The previous prime is 12181841197. The next prime is 12181841227. The reversal of 12181841208 is 80214818121.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28198491 + ... + 28198922.

Almost surely, 2^12181841208 is an apocalyptic number.

12181841208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12181841208 is an abundant number, since it is smaller than the sum of its proper divisors (21656607192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12181841208 is a wasteful number, since it uses less digits than its factorization.

12181841208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56397428 (or 56397418 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 36.

The spelling of 12181841208 in words is "twelve billion, one hundred eighty-one million, eight hundred forty-one thousand, two hundred eight".