43201421089 has 2 divisors, whose sum is σ = 43201421090. Its totient is φ = 43201421088.

The previous prime is 43201421041. The next prime is 43201421183. The reversal of 43201421089 is 98012410234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40524910864 + 2676510225 = 201308^2 + 51735^2 .

It is a cyclic number.

It is not a de Polignac number, because 43201421089 - 2¹⁹ = 43200896801 is a prime.

It is not a weakly prime, because it can be changed into another prime (43201421009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21600710544 + 21600710545.

It is an arithmetic number, because the mean of its divisors is an integer number (21600710545).

Almost surely, 2^43201421089 is an apocalyptic number.

It is an amenable number.

43201421089 is a deficient number, since it is larger than the sum of its proper divisors (1).

43201421089 is an equidigital number, since it uses as much as digits as its factorization.

43201421089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 43201421089 in words is "forty-three billion, two hundred one million, four hundred twenty-one thousand, eighty-nine".