289857247944566 has 8 divisors (see below), whose sum is σ = 434825495195184. Its totient is φ = 144915416212840.

The previous prime is 289857247944493. The next prime is 289857247944569. The reversal of 289857247944566 is 665449742758982.

It is a happy number.

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

It is a super-2 number, since 2×289857247944566² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289857247944569) 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, 6603852290 + ... + 6603896181.

It is an arithmetic number, because the mean of its divisors is an integer number (54353186899398).

Almost surely, 2^{289857247944566} is an apocalyptic number.

289857247944566 is a deficient number, since it is larger than the sum of its proper divisors (144968247250618).

289857247944566 is a wasteful number, since it uses less digits than its factorization.

289857247944566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13207759446.

The product of its digits is 58525286400, while the sum is 86.

The spelling of 289857247944566 in words is "two hundred eighty-nine trillion, eight hundred fifty-seven billion, two hundred forty-seven million, nine hundred forty-four thousand, five hundred sixty-six".