51298905589 has 2 divisors, whose sum is σ = 51298905590. Its totient is φ = 51298905588.

The previous prime is 51298905563. The next prime is 51298905667. The reversal of 51298905589 is 98550989215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34246463364 + 17052442225 = 185058^2 + 130585^2 .

It is a cyclic number.

It is not a de Polignac number, because 51298905589 - 2¹⁹ = 51298381301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51298905389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25649452794 + 25649452795.

It is an arithmetic number, because the mean of its divisors is an integer number (25649452795).

Almost surely, 2^51298905589 is an apocalyptic number.

It is an amenable number.

51298905589 is a deficient number, since it is larger than the sum of its proper divisors (1).

51298905589 is an equidigital number, since it uses as much as digits as its factorization.

51298905589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664000, while the sum is 61.

The spelling of 51298905589 in words is "fifty-one billion, two hundred ninety-eight million, nine hundred five thousand, five hundred eighty-nine".