243352213045155 has 24 divisors (see below), whose sum is σ = 421821445539312. Its totient is φ = 129784479902784.

The previous prime is 243352213045069. The next prime is 243352213045199. The reversal of 243352213045155 is 551540312253342.

243352213045155 is a `hidden beast` number, since 2 + 4 + 3 + 3 + 522 + 1 + 30 + 45 + 1 + 55 = 666.

It is not a de Polignac number, because 243352213045155 - 2⁷ = 243352213045027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 243352213045155.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68392629 + ... + 71862758.

It is an arithmetic number, because the mean of its divisors is an integer number (17575893564138).

Almost surely, 2^{243352213045155} is an apocalyptic number.

243352213045155 is a deficient number, since it is larger than the sum of its proper divisors (178469232494157).

243352213045155 is a wasteful number, since it uses less digits than its factorization.

243352213045155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140293955 (or 140293952 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

Adding to 243352213045155 its reverse (551540312253342), we get a palindrome (794892525298497).

The spelling of 243352213045155 in words is "two hundred forty-three trillion, three hundred fifty-two billion, two hundred thirteen million, forty-five thousand, one hundred fifty-five".