12284311638 has 64 divisors (see below), whose sum is σ = 26663864832. Its totient is φ = 3762823680.

The previous prime is 12284311631. The next prime is 12284311643. The reversal of 12284311638 is 83611348221.

It is a junction number, because it is equal to n+sod(n) for n = 12284311596 and 12284311605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12284311631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 345006 + ... + 378942.

It is an arithmetic number, because the mean of its divisors is an integer number (416622888).

Almost surely, 2^12284311638 is an apocalyptic number.

12284311638 is an abundant number, since it is smaller than the sum of its proper divisors (14379553194).

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

12284311638 is a wasteful number, since it uses less digits than its factorization.

12284311638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34069.

The product of its digits is 55296, while the sum is 39.

Adding to 12284311638 its reverse (83611348221), we get a palindrome (95895659859).

The spelling of 12284311638 in words is "twelve billion, two hundred eighty-four million, three hundred eleven thousand, six hundred thirty-eight".