20082081109 has 2 divisors, whose sum is σ = 20082081110. Its totient is φ = 20082081108.

The previous prime is 20082081091. The next prime is 20082081119. The reversal of 20082081109 is 90118028002.

It is a happy number.

Together with previous prime (20082081091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20079740209 + 2340900 = 141703^2 + 1530^2 .

It is a cyclic number.

It is not a de Polignac number, because 20082081109 - 2¹⁹ = 20081556821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20082081119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10041040554 + 10041040555.

It is an arithmetic number, because the mean of its divisors is an integer number (10041040555).

Almost surely, 2^20082081109 is an apocalyptic number.

It is an amenable number.

20082081109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20082081109 is an equidigital number, since it uses as much as digits as its factorization.

20082081109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 20082081109 in words is "twenty billion, eighty-two million, eighty-one thousand, one hundred nine".