20204011911 has 4 divisors (see below), whose sum is σ = 26938682552. Its totient is φ = 13469341272.

The previous prime is 20204011907. The next prime is 20204011937. The reversal of 20204011911 is 11911040202.

It is a happy number.

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

It is not a de Polignac number, because 20204011911 - 2² = 20204011907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204011511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3367335316 + ... + 3367335321.

It is an arithmetic number, because the mean of its divisors is an integer number (6734670638).

Almost surely, 2^20204011911 is an apocalyptic number.

20204011911 is a deficient number, since it is larger than the sum of its proper divisors (6734670641).

20204011911 is an equidigital number, since it uses as much as digits as its factorization.

20204011911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6734670640.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 20204011911 in words is "twenty billion, two hundred four million, eleven thousand, nine hundred eleven".