243193038537105 has 24 divisors (see below), whose sum is σ = 421534963624320. Its totient is φ = 129702842042400.

The previous prime is 243193038537101. The next prime is 243193038537133. The reversal of 243193038537105 is 501735830391342.

It is a happy number.

243193038537105 is a `hidden beast` number, since 2 + 4 + 3 + 1 + 93 + 0 + 3 + 8 + 537 + 10 + 5 = 666.

It is not a de Polignac number, because 243193038537105 - 2² = 243193038537101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243193038537101) 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 23 ways as a sum of consecutive naturals, for example, 96493686 + ... + 98981904.

It is an arithmetic number, because the mean of its divisors is an integer number (17563956817680).

Almost surely, 2^{243193038537105} is an apocalyptic number.

It is an amenable number.

243193038537105 is a deficient number, since it is larger than the sum of its proper divisors (178341925087215).

243193038537105 is a wasteful number, since it uses less digits than its factorization.

243193038537105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4660181 (or 4660178 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 54.

The spelling of 243193038537105 in words is "two hundred forty-three trillion, one hundred ninety-three billion, thirty-eight million, five hundred thirty-seven thousand, one hundred five".