12187818187830 has 48 divisors (see below), whose sum is σ = 31763955852720. Its totient is φ = 3242328074304.

The previous prime is 12187818187817. The next prime is 12187818187841. The reversal of 12187818187830 is 3878181878121.

12187818187830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161561577 + ... + 161636996.

It is an arithmetic number, because the mean of its divisors is an integer number (661749080265).

Almost surely, 2^{12187818187830} is an apocalyptic number.

12187818187830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12187818187830 is an abundant number, since it is smaller than the sum of its proper divisors (19576137664890).

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

12187818187830 is a wasteful number, since it uses less digits than its factorization.

12187818187830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323199005 (or 323199002 counting only the distinct ones).

The product of its (nonzero) digits is 9633792, while the sum is 63.

The spelling of 12187818187830 in words is "twelve trillion, one hundred eighty-seven billion, eight hundred eighteen million, one hundred eighty-seven thousand, eight hundred thirty".