12638000024 has 64 divisors (see below), whose sum is σ = 27230431200. Its totient is φ = 5450167296.

The previous prime is 12638000021. The next prime is 12638000027. The reversal of 12638000024 is 42000083621.

It is an interprime number because it is at equal distance from previous prime (12638000021) and next prime (12638000027).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 12637999957 and 12638000002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12638000021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100442 + ... + 188054.

Almost surely, 2^12638000024 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 12638000024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13615215600).

12638000024 is an abundant number, since it is smaller than the sum of its proper divisors (14592431176).

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

12638000024 is a wasteful number, since it uses less digits than its factorization.

12638000024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87724 (or 87720 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 12638000024 its reverse (42000083621), we get a palindrome (54638083645).

The spelling of 12638000024 in words is "twelve billion, six hundred thirty-eight million, twenty-four", and thus it is an aban number.