12551243826 has 32 divisors (see below), whose sum is σ = 27426056256. Its totient is φ = 3797640000.

The previous prime is 12551243807. The next prime is 12551243833. The reversal of 12551243826 is 62834215521.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100225 + ... + 187476.

It is an arithmetic number, because the mean of its divisors is an integer number (857064258).

Almost surely, 2^12551243826 is an apocalyptic number.

12551243826 is an abundant number, since it is smaller than the sum of its proper divisors (14874812430).

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

12551243826 is a wasteful number, since it uses less digits than its factorization.

12551243826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288378.

The product of its digits is 115200, while the sum is 39.

The spelling of 12551243826 in words is "twelve billion, five hundred fifty-one million, two hundred forty-three thousand, eight hundred twenty-six".