289202465120661 has 6 divisors (see below), whose sum is σ = 417736894063190. Its totient is φ = 192801643413768.

The previous prime is 289202465120633. The next prime is 289202465120707. The reversal of 289202465120661 is 166021564202982.

289202465120661 is a `hidden beast` number, since 2 + 8 + 9 + 20 + 2 + 46 + 512 + 0 + 6 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 195851796026436 + 93350669094225 = 13994706^2 + 9661815^2 .

It is not a de Polignac number, because 289202465120661 - 2⁷ = 289202465120533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 289202465120598 and 289202465120607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289202465120761) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16066803617806 + ... + 16066803617823.

Almost surely, 2^{289202465120661} is an apocalyptic number.

It is an amenable number.

289202465120661 is a deficient number, since it is larger than the sum of its proper divisors (128534428942529).

289202465120661 is a wasteful number, since it uses less digits than its factorization.

289202465120661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32133607235635 (or 32133607235632 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 289202465120661 in words is "two hundred eighty-nine trillion, two hundred two billion, four hundred sixty-five million, one hundred twenty thousand, six hundred sixty-one".