20011110005 has 8 divisors (see below), whose sum is σ = 24020928600. Its totient is φ = 16003823616.

The previous prime is 20011109971. The next prime is 20011110019. The reversal of 20011110005 is 50001111002.

It can be written as a sum of positive squares in 4 ways, for example, as 1227311089 + 18783798916 = 35033^2 + 137054^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20011110005 - 2⁶ = 20011109941 is a prime.

It is a super-2 number, since 2×20011110005² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615620 + ... + 647309.

It is an arithmetic number, because the mean of its divisors is an integer number (3002616075).

Almost surely, 2^20011110005 is an apocalyptic number.

It is an amenable number.

20011110005 is a deficient number, since it is larger than the sum of its proper divisors (4009818595).

20011110005 is a wasteful number, since it uses less digits than its factorization.

20011110005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266103.

The product of its (nonzero) digits is 10, while the sum is 11.

Adding to 20011110005 its reverse (50001111002), we get a palindrome (70012221007).

The spelling of 20011110005 in words is "twenty billion, eleven million, one hundred ten thousand, five".