12138800826 has 64 divisors (see below), whose sum is σ = 26804920320. Its totient is φ = 3650287680.

The previous prime is 12138800783. The next prime is 12138800857. The reversal of 12138800826 is 62800883121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167631 + ... + 228861.

It is an arithmetic number, because the mean of its divisors is an integer number (418826880).

Almost surely, 2^12138800826 is an apocalyptic number.

12138800826 is an abundant number, since it is smaller than the sum of its proper divisors (14666119494).

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

12138800826 is a wasteful number, since it uses less digits than its factorization.

12138800826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61339.

The product of its (nonzero) digits is 36864, while the sum is 39.

The spelling of 12138800826 in words is "twelve billion, one hundred thirty-eight million, eight hundred thousand, eight hundred twenty-six".