51243606326 has 16 divisors (see below), whose sum is σ = 83967597648. Its totient is φ = 23260764000.

The previous prime is 51243606317. The next prime is 51243606343. The reversal of 51243606326 is 62360634215.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51243606326.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1572725 + ... + 1604976.

It is an arithmetic number, because the mean of its divisors is an integer number (5247974853).

Almost surely, 2^51243606326 is an apocalyptic number.

51243606326 is a deficient number, since it is larger than the sum of its proper divisors (32723991322).

51243606326 is a wasteful number, since it uses less digits than its factorization.

51243606326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178447.

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 51243606326 in words is "fifty-one billion, two hundred forty-three million, six hundred six thousand, three hundred twenty-six".