51443445329 has 2 divisors, whose sum is σ = 51443445330. Its totient is φ = 51443445328.

The previous prime is 51443445247. The next prime is 51443445353. The reversal of 51443445329 is 92354434415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39601000000 + 11842445329 = 199000^2 + 108823^2 .

It is a cyclic number.

It is not a de Polignac number, because 51443445329 - 2³² = 47148478033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51443445329.

It is not a weakly prime, because it can be changed into another prime (51443445379) by changing a digit.

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 as a sum of consecutive naturals, namely, 25721722664 + 25721722665.

It is an arithmetic number, because the mean of its divisors is an integer number (25721722665).

Almost surely, 2^51443445329 is an apocalyptic number.

It is an amenable number.

51443445329 is a deficient number, since it is larger than the sum of its proper divisors (1).

51443445329 is an equidigital number, since it uses as much as digits as its factorization.

51443445329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1036800, while the sum is 44.

The spelling of 51443445329 in words is "fifty-one billion, four hundred forty-three million, four hundred forty-five thousand, three hundred twenty-nine".