20430133205 has 16 divisors (see below), whose sum is σ = 25663454208. Its totient is φ = 15594096000.

The previous prime is 20430133193. The next prime is 20430133219. The reversal of 20430133205 is 50233103402.

It is not a de Polignac number, because 20430133205 - 2¹⁴ = 20430116821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 917216 + ... + 939225.

It is an arithmetic number, because the mean of its divisors is an integer number (1603965888).

Almost surely, 2^20430133205 is an apocalyptic number.

It is an amenable number.

20430133205 is a deficient number, since it is larger than the sum of its proper divisors (5233321003).

20430133205 is a wasteful number, since it uses less digits than its factorization.

20430133205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856548.

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 20430133205 its reverse (50233103402), we get a palindrome (70663236607).

The spelling of 20430133205 in words is "twenty billion, four hundred thirty million, one hundred thirty-three thousand, two hundred five".