12004246638 has 24 divisors (see below), whose sum is σ = 26033989176. Its totient is φ = 3997602000.

The previous prime is 12004246637. The next prime is 12004246711. The reversal of 12004246638 is 83664240021.

12004246638 is a `hidden beast` number, since 12 + 0 + 0 + 4 + 2 + 4 + 6 + 638 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12004246633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 298353 + ... + 336188.

It is an arithmetic number, because the mean of its divisors is an integer number (1084749549).

Almost surely, 2^12004246638 is an apocalyptic number.

12004246638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12004246638 is an abundant number, since it is smaller than the sum of its proper divisors (14029742538).

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

12004246638 is a wasteful number, since it uses less digits than its factorization.

12004246638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635600 (or 635597 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

Adding to 12004246638 its reverse (83664240021), we get a palindrome (95668486659).

The spelling of 12004246638 in words is "twelve billion, four million, two hundred forty-six thousand, six hundred thirty-eight".