20608326289 has 8 divisors (see below), whose sum is σ = 22006667520. Its totient is φ = 19255832400.

The previous prime is 20608326199. The next prime is 20608326293. The reversal of 20608326289 is 98262380602.

It is a happy number.

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 20608326289 - 2¹³ = 20608318097 is a prime.

It is a super-2 number, since 2×20608326289² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20608326889) 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, 11460907 + ... + 11462704.

It is an arithmetic number, because the mean of its divisors is an integer number (2750833440).

Almost surely, 2^20608326289 is an apocalyptic number.

20608326289 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20608326289 is a deficient number, since it is larger than the sum of its proper divisors (1398341231).

20608326289 is a wasteful number, since it uses less digits than its factorization.

20608326289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22923671.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 20608326289 in words is "twenty billion, six hundred eight million, three hundred twenty-six thousand, two hundred eighty-nine".