243055432215 has 16 divisors (see below), whose sum is σ = 432098546400. Its totient is φ = 129629563776.

The previous prime is 243055432199. The next prime is 243055432241. The reversal of 243055432215 is 512234550342.

243055432215 is a `hidden beast` number, since 2 + 4 + 3 + 0 + 5 + 5 + 432 + 215 = 666.

It is not a de Polignac number, because 243055432215 - 2⁴ = 243055432199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243055432215.

It is a congruent number.

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, 900205170 + ... + 900205439.

It is an arithmetic number, because the mean of its divisors is an integer number (27006159150).

Almost surely, 2^243055432215 is an apocalyptic number.

243055432215 is a deficient number, since it is larger than the sum of its proper divisors (189043114185).

243055432215 is a wasteful number, since it uses less digits than its factorization.

243055432215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800410623 (or 1800410617 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 243055432215 its reverse (512234550342), we get a palindrome (755289982557).

The spelling of 243055432215 in words is "two hundred forty-three billion, fifty-five million, four hundred thirty-two thousand, two hundred fifteen".