20305530330011 has 4 divisors (see below), whose sum is σ = 20737562890272. Its totient is φ = 19873497769752.

The previous prime is 20305530329977. The next prime is 20305530330023. The reversal of 20305530330011 is 11003303550302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20305530330011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20305530330031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216016280060 + ... + 216016280153.

It is an arithmetic number, because the mean of its divisors is an integer number (5184390722568).

Almost surely, 2^{20305530330011} is an apocalyptic number.

20305530330011 is a deficient number, since it is larger than the sum of its proper divisors (432032560261).

20305530330011 is an equidigital number, since it uses as much as digits as its factorization.

20305530330011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432032560260.

The product of its (nonzero) digits is 4050, while the sum is 26.

Adding to 20305530330011 its reverse (11003303550302), we get a palindrome (31308833880313).

The spelling of 20305530330011 in words is "twenty trillion, three hundred five billion, five hundred thirty million, three hundred thirty thousand, eleven".