243121152245 has 16 divisors (see below), whose sum is σ = 293004054000. Its totient is φ = 193658669568.

The previous prime is 243121152227. The next prime is 243121152269. The reversal of 243121152245 is 542251121342.

243121152245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 5188897156 + 237932255089 = 72034^2 + 487783^2 .

It is a cyclic number.

It is not a de Polignac number, because 243121152245 - 2⁸ = 243121151989 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2245721 + ... + 2351489.

It is an arithmetic number, because the mean of its divisors is an integer number (18312753375).

Almost surely, 2^243121152245 is an apocalyptic number.

It is an amenable number.

243121152245 is a deficient number, since it is larger than the sum of its proper divisors (49882901755).

243121152245 is a wasteful number, since it uses less digits than its factorization.

243121152245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107752.

The product of its digits is 19200, while the sum is 32.

Adding to 243121152245 its reverse (542251121342), we get a palindrome (785372273587).

The spelling of 243121152245 in words is "two hundred forty-three billion, one hundred twenty-one million, one hundred fifty-two thousand, two hundred forty-five".