243135363559 has 4 divisors (see below), whose sum is σ = 265238578440. Its totient is φ = 221032148680.

The previous prime is 243135363547. The next prime is 243135363589. The reversal of 243135363559 is 955363531342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243135363559 - 2⁷ = 243135363431 is a prime.

It is a super-2 number, since 2×243135363559² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243135363509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11051607424 + ... + 11051607445.

It is an arithmetic number, because the mean of its divisors is an integer number (66309644610).

Almost surely, 2^243135363559 is an apocalyptic number.

243135363559 is a deficient number, since it is larger than the sum of its proper divisors (22103214881).

243135363559 is a wasteful number, since it uses less digits than its factorization.

243135363559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22103214880.

The product of its digits is 4374000, while the sum is 49.

The spelling of 243135363559 in words is "two hundred forty-three billion, one hundred thirty-five million, three hundred sixty-three thousand, five hundred fifty-nine".