8000111111 has 4 divisors (see below), whose sum is σ = 8002202112. Its totient is φ = 7998020112.

The previous prime is 8000111089. The next prime is 8000111113. The reversal of 8000111111 is 1111110008.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8000111111 is a prime.

It is a Duffinian number.

8000111111 is a modest number, since divided by 111111 gives 8000 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8000111113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1039751 + ... + 1047416.

It is an arithmetic number, because the mean of its divisors is an integer number (2000550528).

Almost surely, 2^8000111111 is an apocalyptic number.

8000111111 is a deficient number, since it is larger than the sum of its proper divisors (2091001).

8000111111 is a wasteful number, since it uses less digits than its factorization.

8000111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091000.

The product of its (nonzero) digits is 8, while the sum is 14.

The square root of 8000111111 is about 89443.3402272075. The cubic root of 8000111111 is about 2000.0092592071.

Adding to 8000111111 its reverse (1111110008), we get a palindrome (9111221119).

The spelling of 8000111111 in words is "eight billion, one hundred eleven thousand, one hundred eleven".