51328843789 has 2 divisors, whose sum is σ = 51328843790. Its totient is φ = 51328843788.

The previous prime is 51328843771. The next prime is 51328843793. The reversal of 51328843789 is 98734882315.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30291662025 + 21037181764 = 174045^2 + 145042^2 .

It is a cyclic number.

It is not a de Polignac number, because 51328843789 - 2²⁹ = 50791972877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51328843759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25664421894 + 25664421895.

It is an arithmetic number, because the mean of its divisors is an integer number (25664421895).

Almost surely, 2^51328843789 is an apocalyptic number.

It is an amenable number.

51328843789 is a deficient number, since it is larger than the sum of its proper divisors (1).

51328843789 is an equidigital number, since it uses as much as digits as its factorization.

51328843789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11612160, while the sum is 58.

The spelling of 51328843789 in words is "fifty-one billion, three hundred twenty-eight million, eight hundred forty-three thousand, seven hundred eighty-nine".