243001120591 has 2 divisors, whose sum is σ = 243001120592. Its totient is φ = 243001120590.

The previous prime is 243001120577. The next prime is 243001120601. The reversal of 243001120591 is 195021100342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243001120591 - 2²¹ = 242999023439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243001123591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121500560295 + 121500560296.

It is an arithmetic number, because the mean of its divisors is an integer number (121500560296).

Almost surely, 2^243001120591 is an apocalyptic number.

243001120591 is a deficient number, since it is larger than the sum of its proper divisors (1).

243001120591 is an equidigital number, since it uses as much as digits as its factorization.

243001120591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 243001120591 in words is "two hundred forty-three billion, one million, one hundred twenty thousand, five hundred ninety-one".