20109114439 has 2 divisors, whose sum is σ = 20109114440. Its totient is φ = 20109114438.

The previous prime is 20109114427. The next prime is 20109114449. The reversal of 20109114439 is 93441190102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20109114439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20109114419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10054557219 + 10054557220.

It is an arithmetic number, because the mean of its divisors is an integer number (10054557220).

Almost surely, 2^20109114439 is an apocalyptic number.

20109114439 is a deficient number, since it is larger than the sum of its proper divisors (1).

20109114439 is an equidigital number, since it uses as much as digits as its factorization.

20109114439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 20109114439 in words is "twenty billion, one hundred nine million, one hundred fourteen thousand, four hundred thirty-nine".