689381355243 has 8 divisors (see below), whose sum is σ = 1050485874688. Its totient is φ = 393932202984.

The previous prime is 689381355241. The next prime is 689381355281. The reversal of 689381355243 is 342553183986.

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

It is not a de Polignac number, because 689381355243 - 2¹ = 689381355241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689381355241) 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, 16413841771 + ... + 16413841812.

It is an arithmetic number, because the mean of its divisors is an integer number (131310734336).

Almost surely, 2^689381355243 is an apocalyptic number.

689381355243 is a deficient number, since it is larger than the sum of its proper divisors (361104519445).

689381355243 is a wasteful number, since it uses less digits than its factorization.

689381355243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32827683593.

The product of its digits is 18662400, while the sum is 57.

The spelling of 689381355243 in words is "six hundred eighty-nine billion, three hundred eighty-one million, three hundred fifty-five thousand, two hundred forty-three".