243534236513 has 8 divisors (see below), whose sum is σ = 249307376640. Its totient is φ = 237818540880.

The previous prime is 243534236483. The next prime is 243534236527. The reversal of 243534236513 is 315632435342.

243534236513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243534236513 - 2¹⁴ = 243534220129 is a prime.

It is a super-3 number, since 3×243534236513³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243534256513) 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 7 ways as a sum of consecutive naturals, for example, 14352545 + ... + 14369502.

It is an arithmetic number, because the mean of its divisors is an integer number (31163422080).

Almost surely, 2^243534236513 is an apocalyptic number.

It is an amenable number.

243534236513 is a deficient number, since it is larger than the sum of its proper divisors (5773140127).

243534236513 is a wasteful number, since it uses less digits than its factorization.

243534236513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28722247.

The product of its digits is 777600, while the sum is 41.

The spelling of 243534236513 in words is "two hundred forty-three billion, five hundred thirty-four million, two hundred thirty-six thousand, five hundred thirteen".