20333332505 has 32 divisors (see below), whose sum is σ = 26918611200. Its totient is φ = 14675772672.

The previous prime is 20333332501. The next prime is 20333332529. The reversal of 20333332505 is 50523333302.

It is a happy number.

It is not a de Polignac number, because 20333332505 - 2² = 20333332501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20333332501) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 480047 + ... + 520683.

It is an arithmetic number, because the mean of its divisors is an integer number (841206600).

Almost surely, 2^20333332505 is an apocalyptic number.

It is an amenable number.

20333332505 is a deficient number, since it is larger than the sum of its proper divisors (6585278695).

20333332505 is a wasteful number, since it uses less digits than its factorization.

20333332505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40913.

The product of its (nonzero) digits is 24300, while the sum is 29.

Adding to 20333332505 its reverse (50523333302), we get a palindrome (70856665807).

The spelling of 20333332505 in words is "twenty billion, three hundred thirty-three million, three hundred thirty-two thousand, five hundred five".