20606341605 has 16 divisors (see below), whose sum is σ = 34705417920. Its totient is φ = 10411625088.

The previous prime is 20606341603. The next prime is 20606341673. The reversal of 20606341605 is 50614360602.

It is not a de Polignac number, because 20606341605 - 2¹ = 20606341603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20606341603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36151192 + ... + 36151761.

It is an arithmetic number, because the mean of its divisors is an integer number (2169088620).

Almost surely, 2^20606341605 is an apocalyptic number.

It is an amenable number.

20606341605 is a deficient number, since it is larger than the sum of its proper divisors (14099076315).

20606341605 is a wasteful number, since it uses less digits than its factorization.

20606341605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72302980.

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 20606341605 in words is "twenty billion, six hundred six million, three hundred forty-one thousand, six hundred five".