12638200007 has 4 divisors (see below), whose sum is σ = 12816202896. Its totient is φ = 12460197120.

The previous prime is 12638199997. The next prime is 12638200009. The reversal of 12638200007 is 70000283621.

It is a happy number.

12638200007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12638200007 - 2⁴ = 12638199991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12638200009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89001338 + ... + 89001479.

It is an arithmetic number, because the mean of its divisors is an integer number (3204050724).

Almost surely, 2^12638200007 is an apocalyptic number.

12638200007 is a deficient number, since it is larger than the sum of its proper divisors (178002889).

12638200007 is an equidigital number, since it uses as much as digits as its factorization.

12638200007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178002888.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 12638200007 its reverse (70000283621), we get a palindrome (82638483628).

The spelling of 12638200007 in words is "twelve billion, six hundred thirty-eight million, two hundred thousand, seven".