243005380289 has 8 divisors (see below), whose sum is σ = 277961730048. Its totient is φ = 208109354400.

The previous prime is 243005380273. The next prime is 243005380309. The reversal of 243005380289 is 982083500342.

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 243005380289 - 2⁴ = 243005380273 is a prime.

It is a super-2 number, since 2×243005380289² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243005380589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15072332 + ... + 15088445.

It is an arithmetic number, because the mean of its divisors is an integer number (34745216256).

Almost surely, 2^243005380289 is an apocalyptic number.

It is an amenable number.

243005380289 is a deficient number, since it is larger than the sum of its proper divisors (34956349759).

243005380289 is a wasteful number, since it uses less digits than its factorization.

243005380289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30161935.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 243005380289 in words is "two hundred forty-three billion, five million, three hundred eighty thousand, two hundred eighty-nine".