243115021159 has 2 divisors, whose sum is σ = 243115021160. Its totient is φ = 243115021158.

The previous prime is 243115021141. The next prime is 243115021243. The reversal of 243115021159 is 951120511342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243115021159 - 2¹¹ = 243115019111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243115021459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121557510579 + 121557510580.

It is an arithmetic number, because the mean of its divisors is an integer number (121557510580).

Almost surely, 2^243115021159 is an apocalyptic number.

243115021159 is a deficient number, since it is larger than the sum of its proper divisors (1).

243115021159 is an equidigital number, since it uses as much as digits as its factorization.

243115021159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 243115021159 in words is "two hundred forty-three billion, one hundred fifteen million, twenty-one thousand, one hundred fifty-nine".