243301505016403 has 16 divisors (see below), whose sum is σ = 268816551336000. Its totient is φ = 219031451431936.

The previous prime is 243301505016391. The next prime is 243301505016431. The reversal of 243301505016403 is 304610505103342.

It is a de Polignac number, because none of the positive numbers 2^k-243301505016403 is a prime.

It is a super-5 number, since 5×243301505016403⁵ (a number of 73 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243301505116403) 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, 37973223 + ... + 43915471.

It is an arithmetic number, because the mean of its divisors is an integer number (16801034458500).

Almost surely, 2^{243301505016403} is an apocalyptic number.

243301505016403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

243301505016403 is a deficient number, since it is larger than the sum of its proper divisors (25515046319597).

243301505016403 is a wasteful number, since it uses less digits than its factorization.

243301505016403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6047006.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 243301505016403 in words is "two hundred forty-three trillion, three hundred one billion, five hundred five million, sixteen thousand, four hundred three".