243121241136 has 40 divisors (see below), whose sum is σ = 642669332800. Its totient is φ = 79155752256.

The previous prime is 243121241131. The next prime is 243121241141. The reversal of 243121241136 is 631142121342.

243121241136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (243121241131) and next prime (243121241141).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (243121241131) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 58893586 + ... + 58897713.

It is an arithmetic number, because the mean of its divisors is an integer number (16066733320).

Almost surely, 2^243121241136 is an apocalyptic number.

It is an amenable number.

243121241136 is an abundant number, since it is smaller than the sum of its proper divisors (399548091664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243121241136 is a wasteful number, since it uses less digits than its factorization.

243121241136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117791353 (or 117791347 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

Adding to 243121241136 its reverse (631142121342), we get a palindrome (874263362478).

The spelling of 243121241136 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-one thousand, one hundred thirty-six".