20430112209 has 16 divisors (see below), whose sum is σ = 29388244032. Its totient is φ = 12549791808.

The previous prime is 20430112103. The next prime is 20430112217. The reversal of 20430112209 is 90221103402.

It is not a de Polignac number, because 20430112209 - 2⁷ = 20430112081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20430112309) 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 15 ways as a sum of consecutive naturals, for example, 448519 + ... + 491964.

It is an arithmetic number, because the mean of its divisors is an integer number (1836765252).

Almost surely, 2^20430112209 is an apocalyptic number.

It is an amenable number.

20430112209 is a deficient number, since it is larger than the sum of its proper divisors (8958131823).

20430112209 is a wasteful number, since it uses less digits than its factorization.

20430112209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941056.

The product of its (nonzero) digits is 864, while the sum is 24.

The spelling of 20430112209 in words is "twenty billion, four hundred thirty million, one hundred twelve thousand, two hundred nine".