20385108535 has 16 divisors (see below), whose sum is σ = 26772907392. Its totient is φ = 14777229600.

The previous prime is 20385108521. The next prime is 20385108559. The reversal of 20385108535 is 53580158302.

It is a happy number.

It is not a de Polignac number, because 20385108535 - 2⁵ = 20385108503 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 586761 + ... + 620530.

It is an arithmetic number, because the mean of its divisors is an integer number (1673306712).

Almost surely, 2^20385108535 is an apocalyptic number.

20385108535 is a deficient number, since it is larger than the sum of its proper divisors (6387798857).

20385108535 is a wasteful number, since it uses less digits than its factorization.

20385108535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207614.

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 20385108535 in words is "twenty billion, three hundred eighty-five million, one hundred eight thousand, five hundred thirty-five".