43648780589 has 2 divisors, whose sum is σ = 43648780590. Its totient is φ = 43648780588.

The previous prime is 43648780543. The next prime is 43648780621. The reversal of 43648780589 is 98508784634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29221167364 + 14427613225 = 170942^2 + 120115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43648780589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43648780529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21824390294 + 21824390295.

It is an arithmetic number, because the mean of its divisors is an integer number (21824390295).

Almost surely, 2^43648780589 is an apocalyptic number.

It is an amenable number.

43648780589 is a deficient number, since it is larger than the sum of its proper divisors (1).

43648780589 is an equidigital number, since it uses as much as digits as its factorization.

43648780589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46448640, while the sum is 62.

The spelling of 43648780589 in words is "forty-three billion, six hundred forty-eight million, seven hundred eighty thousand, five hundred eighty-nine".