20333223405 has 48 divisors (see below), whose sum is σ = 40709957184. Its totient is φ = 9278615040.

The previous prime is 20333223403. The next prime is 20333223409. The reversal of 20333223405 is 50432233302.

20333223405 is a `hidden beast` number, since 2 + 0 + 3 + 33 + 223 + 405 = 666.

It is not a de Polignac number, because 20333223405 - 2¹ = 20333223403 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 (20333223401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1199739 + ... + 1216568.

It is an arithmetic number, because the mean of its divisors is an integer number (848124108).

Almost surely, 2^20333223405 is an apocalyptic number.

It is an amenable number.

20333223405 is an abundant number, since it is smaller than the sum of its proper divisors (20376733779).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20333223405 is a wasteful number, since it uses less digits than its factorization.

20333223405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416346 (or 2416343 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 27.

Adding to 20333223405 its reverse (50432233302), we get a palindrome (70765456707).

The spelling of 20333223405 in words is "twenty billion, three hundred thirty-three million, two hundred twenty-three thousand, four hundred five".