243311552145 has 48 divisors (see below), whose sum is σ = 430839482112. Its totient is φ = 126967948800.

The previous prime is 243311552117. The next prime is 243311552203. The reversal of 243311552145 is 541255113342.

243311552145 is a `hidden beast` number, since 2 + 433 + 1 + 1 + 5 + 5 + 214 + 5 = 666.

It is not a de Polignac number, because 243311552145 - 2¹³ = 243311543953 is a prime.

It is a super-2 number, since 2×243311552145² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8129929 + ... + 8159801.

It is an arithmetic number, because the mean of its divisors is an integer number (8975822544).

Almost surely, 2^243311552145 is an apocalyptic number.

It is an amenable number.

243311552145 is a deficient number, since it is larger than the sum of its proper divisors (187527929967).

243311552145 is a wasteful number, since it uses less digits than its factorization.

243311552145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33782 (or 33779 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

Adding to 243311552145 its reverse (541255113342), we get a palindrome (784566665487).

The spelling of 243311552145 in words is "two hundred forty-three billion, three hundred eleven million, five hundred fifty-two thousand, one hundred forty-five".