243115025445 has 48 divisors (see below), whose sum is σ = 443997240960. Its totient is φ = 122721049728.

The previous prime is 243115025441. The next prime is 243115025497. The reversal of 243115025445 is 544520511342.

243115025445 is a `hidden beast` number, since 2 + 4 + 311 + 50 + 254 + 45 = 666.

It is not a de Polignac number, because 243115025445 - 2² = 243115025441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243115025441) 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 in 47 ways as a sum of consecutive naturals, for example, 775119 + ... + 1042611.

It is an arithmetic number, because the mean of its divisors is an integer number (9249942520).

Almost surely, 2^243115025445 is an apocalyptic number.

It is an amenable number.

243115025445 is a deficient number, since it is larger than the sum of its proper divisors (200882215515).

243115025445 is a wasteful number, since it uses less digits than its factorization.

243115025445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268586 (or 268583 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 243115025445 its reverse (544520511342), we get a palindrome (787635536787).

The spelling of 243115025445 in words is "two hundred forty-three billion, one hundred fifteen million, twenty-five thousand, four hundred forty-five".