100505289289 has 8 divisors (see below), whose sum is σ = 102476929032. Its totient is φ = 98536439040.

The previous prime is 100505289281. The next prime is 100505289323. The reversal of 100505289289 is 982982505001.

It can be written as a sum of positive squares in 4 ways, for example, as 12013913664 + 88491375625 = 109608^2 + 297475^2 .

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 100505289289 - 2³ = 100505289281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100505289281) 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, 624534 + ... + 768799.

It is an arithmetic number, because the mean of its divisors is an integer number (12809616129).

Almost surely, 2^100505289289 is an apocalyptic number.

It is an amenable number.

100505289289 is a deficient number, since it is larger than the sum of its proper divisors (1971639743).

100505289289 is a wasteful number, since it uses less digits than its factorization.

100505289289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394747.

The product of its (nonzero) digits is 518400, while the sum is 49.

The spelling of 100505289289 in words is "one hundred billion, five hundred five million, two hundred eighty-nine thousand, two hundred eighty-nine".