12187401876 has 324 divisors, whose sum is σ = 36546007680. Its totient is φ = 3418796160.

The previous prime is 12187401871. The next prime is 12187401899. The reversal of 12187401876 is 67810478121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12187401871) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 68085955 + ... + 68086133.

It is an arithmetic number, because the mean of its divisors is an integer number (112796320).

Almost surely, 2^12187401876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12187401876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18273003840).

12187401876 is an abundant number, since it is smaller than the sum of its proper divisors (24358605804).

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

12187401876 is a wasteful number, since it uses less digits than its factorization.

12187401876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

Adding to 12187401876 its reverse (67810478121), we get a palindrome (79997879997).

The spelling of 12187401876 in words is "twelve billion, one hundred eighty-seven million, four hundred one thousand, eight hundred seventy-six".