711111111111 has 6 divisors (see below), whose sum is σ = 1027160493840. Its totient is φ = 474074074068.

The previous prime is 711111111043. The next prime is 711111111197. The reversal of 711111111111 is 111111111117.

It is not a de Polignac number, because 711111111111 - 2³³ = 702521176519 is a prime.

711111111111 is a modest number, since divided by 1111111 gives 71111 as remainder.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (711111121111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39506172831 + ... + 39506172848.

It is an arithmetic number, because the mean of its divisors is an integer number (171193415640).

Almost surely, 2^711111111111 is an apocalyptic number.

711111111111 is a deficient number, since it is larger than the sum of its proper divisors (316049382729).

711111111111 is a wasteful number, since it uses less digits than its factorization.

711111111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79012345685 (or 79012345682 counting only the distinct ones).

The product of its digits is 7, while the sum is 18.

Adding to 711111111111 its reverse (111111111117), we get a palindrome (822222222228).

It can be divided in two parts, 7 and 11111111111, that multiplied together give a palindrome (77777777777).

The spelling of 711111111111 in words is "seven hundred eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred eleven".