243513305013 has 24 divisors (see below), whose sum is σ = 356921728128. Its totient is φ = 147568432000.

The previous prime is 243513305011. The next prime is 243513305053. The reversal of 243513305013 is 310503315342.

243513305013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243513305013 - 2¹ = 243513305011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243513305011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4134733 + ... + 4193213.

It is an arithmetic number, because the mean of its divisors is an integer number (14871738672).

Almost surely, 2^243513305013 is an apocalyptic number.

It is an amenable number.

243513305013 is a deficient number, since it is larger than the sum of its proper divisors (113408423115).

243513305013 is a wasteful number, since it uses less digits than its factorization.

243513305013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69977 (or 69966 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

The spelling of 243513305013 in words is "two hundred forty-three billion, five hundred thirteen million, three hundred five thousand, thirteen".