20983040011 has 2 divisors, whose sum is σ = 20983040012. Its totient is φ = 20983040010.

The previous prime is 20983039999. The next prime is 20983040017. The reversal of 20983040011 is 11004038902.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20983040011 - 2⁹ = 20983039499 is a prime.

It is not a weakly prime, because it can be changed into another prime (20983040017) 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 as a sum of consecutive naturals, namely, 10491520005 + 10491520006.

It is an arithmetic number, because the mean of its divisors is an integer number (10491520006).

Almost surely, 2^20983040011 is an apocalyptic number.

20983040011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20983040011 is an equidigital number, since it uses as much as digits as its factorization.

20983040011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 20983040011 its reverse (11004038902), we get a palindrome (31987078913).

The spelling of 20983040011 in words is "twenty billion, nine hundred eighty-three million, forty thousand, eleven".