20165606589 has 8 divisors (see below), whose sum is σ = 26931055680. Its totient is φ = 13421947616.

The previous prime is 20165606581. The next prime is 20165606599. The reversal of 20165606589 is 98560656102.

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 20165606589 - 2³ = 20165606581 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20165606581) 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, 5445369 + ... + 5449070.

It is an arithmetic number, because the mean of its divisors is an integer number (3366381960).

Almost surely, 2^20165606589 is an apocalyptic number.

It is an amenable number.

20165606589 is a deficient number, since it is larger than the sum of its proper divisors (6765449091).

20165606589 is a wasteful number, since it uses less digits than its factorization.

20165606589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10895059.

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 20165606589 in words is "twenty billion, one hundred sixty-five million, six hundred six thousand, five hundred eighty-nine".