71100111011 has 4 divisors (see below), whose sum is σ = 71145718800. Its totient is φ = 71054503224.

The previous prime is 71100111001. The next prime is 71100111023. The reversal of 71100111011 is 11011100117.

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

It is a cyclic number.

It is not a de Polignac number, because 71100111011 - 2⁶ = 71100110947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71100111001) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 22801556 + ... + 22804673.

It is an arithmetic number, because the mean of its divisors is an integer number (17786429700).

Almost surely, 2^71100111011 is an apocalyptic number.

71100111011 is a deficient number, since it is larger than the sum of its proper divisors (45607789).

71100111011 is a wasteful number, since it uses less digits than its factorization.

71100111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45607788.

The product of its (nonzero) digits is 7, while the sum is 14.

Adding to 71100111011 its reverse (11011100117), we get a palindrome (82111211128).

The spelling of 71100111011 in words is "seventy-one billion, one hundred million, one hundred eleven thousand, eleven".