20404204405311 has 8 divisors (see below), whose sum is σ = 27260126128000. Its totient is φ = 13575542809752.

The previous prime is 20404204405309. The next prime is 20404204405363. The reversal of 20404204405311 is 11350440240402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20404204405311 - 2¹ = 20404204405309 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 (20404204403311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6815030035 + ... + 6815033028.

It is an arithmetic number, because the mean of its divisors is an integer number (3407515766000).

Almost surely, 2^{20404204405311} is an apocalyptic number.

20404204405311 is a deficient number, since it is larger than the sum of its proper divisors (6855921722689).

20404204405311 is a wasteful number, since it uses less digits than its factorization.

20404204405311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13630063565.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 20404204405311 its reverse (11350440240402), we get a palindrome (31754644645713).

The spelling of 20404204405311 in words is "twenty trillion, four hundred four billion, two hundred four million, four hundred five thousand, three hundred eleven".