20110505050611 has 20 divisors (see below), whose sum is σ = 30042479931552. Its totient is φ = 13406618996208.

The previous prime is 20110505050577. The next prime is 20110505050663. The reversal of 20110505050611 is 11605050501102.

20110505050611 is a `hidden beast` number, since 2 + 0 + 1 + 105 + 0 + 50 + 506 + 1 + 1 = 666.

It is not a de Polignac number, because 20110505050611 - 2⁷ = 20110505050483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20110525050611) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 702171 + ... + 6380756.

Almost surely, 2^{20110505050611} is an apocalyptic number.

20110505050611 is a deficient number, since it is larger than the sum of its proper divisors (9931974880941).

20110505050611 is an equidigital number, since it uses as much as digits as its factorization.

20110505050611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7117992 (or 7117983 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 27.

Adding to 20110505050611 its reverse (11605050501102), we get a palindrome (31715555551713).

The spelling of 20110505050611 in words is "twenty trillion, one hundred ten billion, five hundred five million, fifty thousand, six hundred eleven".