12135003648 has 120 divisors (see below), whose sum is σ = 34343198472. Its totient is φ = 3806920704.

The previous prime is 12135003637. The next prime is 12135003667. The reversal of 12135003648 is 84630053121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 430236 + ... + 457572.

Almost surely, 2^12135003648 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 12135003648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17171599236).

12135003648 is an abundant number, since it is smaller than the sum of its proper divisors (22208194824).

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

12135003648 is an equidigital number, since it uses as much as digits as its factorization.

12135003648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27392 (or 27359 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 12135003648 its reverse (84630053121), we get a palindrome (96765056769).

The spelling of 12135003648 in words is "twelve billion, one hundred thirty-five million, three thousand, six hundred forty-eight".