243223553442507 has 16 divisors (see below), whose sum is σ = 361306942060032. Its totient is φ = 144271869223520.

The previous prime is 243223553442491. The next prime is 243223553442533. The reversal of 243223553442507 is 705244355322342.

It is a cyclic number.

It is not a de Polignac number, because 243223553442507 - 2⁴ = 243223553442491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243223553442507.

It is not an unprimeable number, because it can be changed into a prime (243223553441507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78408623028 + ... + 78408626129.

It is an arithmetic number, because the mean of its divisors is an integer number (22581683878752).

Almost surely, 2^{243223553442507} is an apocalyptic number.

243223553442507 is a deficient number, since it is larger than the sum of its proper divisors (118083388617525).

243223553442507 is a wasteful number, since it uses less digits than its factorization.

243223553442507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156817249218.

The product of its (nonzero) digits is 24192000, while the sum is 51.

The spelling of 243223553442507 in words is "two hundred forty-three trillion, two hundred twenty-three billion, five hundred fifty-three million, four hundred forty-two thousand, five hundred seven".