20110136605 has 16 divisors (see below), whose sum is σ = 26041889664. Its totient is φ = 14820045120.

The previous prime is 20110136593. The next prime is 20110136611. The reversal of 20110136605 is 50663101102.

It is not a de Polignac number, because 20110136605 - 2³¹ = 17962652957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20110136605.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 285991 + ... + 349300.

It is an arithmetic number, because the mean of its divisors is an integer number (1627618104).

Almost surely, 2^20110136605 is an apocalyptic number.

It is an amenable number.

20110136605 is a deficient number, since it is larger than the sum of its proper divisors (5931753059).

20110136605 is a wasteful number, since it uses less digits than its factorization.

20110136605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635796.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 20110136605 its reverse (50663101102), we get a palindrome (70773237707).

The spelling of 20110136605 in words is "twenty billion, one hundred ten million, one hundred thirty-six thousand, six hundred five".