12143616865500 has 96 divisors (see below), whose sum is σ = 35372480270400. Its totient is φ = 3237357542400.

The previous prime is 12143616865493. The next prime is 12143616865511. The reversal of 12143616865500 is 556861634121.

It is a self number, because there is not a number n which added to its sum of digits gives 12143616865500.

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, 3999864 + ... + 6347136.

It is an arithmetic number, because the mean of its divisors is an integer number (368463336150).

Almost surely, 2^{12143616865500} is an apocalyptic number.

12143616865500 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 12143616865500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17686240135200).

12143616865500 is an abundant number, since it is smaller than the sum of its proper divisors (23228863404900).

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

12143616865500 is a wasteful number, since it uses less digits than its factorization.

12143616865500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350744 (or 2350732 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 12143616865500 in words is "twelve trillion, one hundred forty-three billion, six hundred sixteen million, eight hundred sixty-five thousand, five hundred".