12187855402720 has 192 divisors, whose sum is σ = 30785580887040. Its totient is φ = 4548402073600.

The previous prime is 12187855402717. The next prime is 12187855402757. The reversal of 12187855402720 is 2720455878121.

12187855402720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12187855402720² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1068073815 + ... + 1068085225.

It is an arithmetic number, because the mean of its divisors is an integer number (160341567120).

Almost surely, 2^{12187855402720} is an apocalyptic number.

12187855402720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12187855402720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15392790443520).

12187855402720 is an abundant number, since it is smaller than the sum of its proper divisors (18597725484320).

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

12187855402720 is a wasteful number, since it uses less digits than its factorization.

12187855402720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18569 (or 18561 counting only the distinct ones).

The product of its (nonzero) digits is 2508800, while the sum is 52.

The spelling of 12187855402720 in words is "twelve trillion, one hundred eighty-seven billion, eight hundred fifty-five million, four hundred two thousand, seven hundred twenty".