20434404113 has 2 divisors, whose sum is σ = 20434404114. Its totient is φ = 20434404112.

The previous prime is 20434404101. The next prime is 20434404127. The reversal of 20434404113 is 31140443402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12054283264 + 8380120849 = 109792^2 + 91543^2 .

It is a cyclic number.

It is not a de Polignac number, because 20434404113 - 2²² = 20430209809 is a prime.

It is not a weakly prime, because it can be changed into another prime (20434404313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10217202056 + 10217202057.

It is an arithmetic number, because the mean of its divisors is an integer number (10217202057).

Almost surely, 2^20434404113 is an apocalyptic number.

It is an amenable number.

20434404113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20434404113 is an equidigital number, since it uses as much as digits as its factorization.

20434404113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 20434404113 its reverse (31140443402), we get a palindrome (51574847515).

The spelling of 20434404113 in words is "twenty billion, four hundred thirty-four million, four hundred four thousand, one hundred thirteen".