20604002011 has 2 divisors, whose sum is σ = 20604002012. Its totient is φ = 20604002010.

The previous prime is 20604002009. The next prime is 20604002033. The reversal of 20604002011 is 11020040602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20604002011 - 2¹ = 20604002009 is a prime.

Together with 20604002009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20604002051) 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, 10302001005 + 10302001006.

It is an arithmetic number, because the mean of its divisors is an integer number (10302001006).

Almost surely, 2^20604002011 is an apocalyptic number.

20604002011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20604002011 is an equidigital number, since it uses as much as digits as its factorization.

20604002011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20604002011 its reverse (11020040602), we get a palindrome (31624042613).

The spelling of 20604002011 in words is "twenty billion, six hundred four million, two thousand, eleven".