243133052155 has 16 divisors (see below), whose sum is σ = 333546670080. Its totient is φ = 166666279392.

The previous prime is 243133052137. The next prime is 243133052191. The reversal of 243133052155 is 551250331342.

It is a cyclic number.

It is not a de Polignac number, because 243133052155 - 2¹⁵ = 243133019387 is a prime.

It is a super-2 number, since 2×243133052155² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243133052155.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1004439 + ... + 1222768.

It is an arithmetic number, because the mean of its divisors is an integer number (20846666880).

Almost surely, 2^243133052155 is an apocalyptic number.

243133052155 is a deficient number, since it is larger than the sum of its proper divisors (90413617925).

243133052155 is a wasteful number, since it uses less digits than its factorization.

243133052155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230338.

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 243133052155 its reverse (551250331342), we get a palindrome (794383383497).

The spelling of 243133052155 in words is "two hundred forty-three billion, one hundred thirty-three million, fifty-two thousand, one hundred fifty-five".