243386990617 has 8 divisors (see below), whose sum is σ = 261550200096. Its totient is φ = 225651150912.

The previous prime is 243386990611. The next prime is 243386990641. The reversal of 243386990617 is 716099683342.

It is a happy number.

243386990617 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 243386990617 - 2⁷ = 243386990489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243386990611) 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, 106841263 + ... + 106843540.

It is an arithmetic number, because the mean of its divisors is an integer number (32693775012).

Almost surely, 2^243386990617 is an apocalyptic number.

It is an amenable number.

243386990617 is a deficient number, since it is larger than the sum of its proper divisors (18163209479).

243386990617 is a wasteful number, since it uses less digits than its factorization.

243386990617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213684887.

The product of its (nonzero) digits is 11757312, while the sum is 58.

The spelling of 243386990617 in words is "two hundred forty-three billion, three hundred eighty-six million, nine hundred ninety thousand, six hundred seventeen".