20020233505 has 32 divisors (see below), whose sum is σ = 25631023104. Its totient is φ = 14977000896.

The previous prime is 20020233479. The next prime is 20020233511. The reversal of 20020233505 is 50533202002.

It is not a de Polignac number, because 20020233505 - 2¹¹ = 20020231457 is a prime.

It is a super-3 number, since 3×20020233505³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6933172 + ... + 6936058.

It is an arithmetic number, because the mean of its divisors is an integer number (800969472).

Almost surely, 2^20020233505 is an apocalyptic number.

It is an amenable number.

20020233505 is a deficient number, since it is larger than the sum of its proper divisors (5610789599).

20020233505 is a wasteful number, since it uses less digits than its factorization.

20020233505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4245.

The product of its (nonzero) digits is 1800, while the sum is 22.

Adding to 20020233505 its reverse (50533202002), we get a palindrome (70553435507).

The spelling of 20020233505 in words is "twenty billion, twenty million, two hundred thirty-three thousand, five hundred five".