243105050045 has 144 divisors (see below), whose sum is σ = 359949103920. Its totient is φ = 156537722880.

The previous prime is 243105050021. The next prime is 243105050057. The reversal of 243105050045 is 540050501342.

It can be written as a sum of positive squares in 8 ways, for example, as 188156089 + 242916893956 = 13717^2 + 492866^2 .

It is not a de Polignac number, because 243105050045 - 2⁶ = 243105049981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1061593991 + ... + 1061594219.

It is an arithmetic number, because the mean of its divisors is an integer number (2499646555).

Almost surely, 2^243105050045 is an apocalyptic number.

It is an amenable number.

243105050045 is a deficient number, since it is larger than the sum of its proper divisors (116844053875).

243105050045 is a wasteful number, since it uses less digits than its factorization.

243105050045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 243105050045 its reverse (540050501342), we get a palindrome (783155551387).

The spelling of 243105050045 in words is "two hundred forty-three billion, one hundred five million, fifty thousand, forty-five".