711611111111 has 2 divisors, whose sum is σ = 711611111112. Its totient is φ = 711611111110.

The previous prime is 711611111063. The next prime is 711611111153. The reversal of 711611111111 is 111111116117.

It is a m-pointer prime, because the next prime (711611111153) can be obtained adding 711611111111 to its product of digits (42).

It is a strong prime.

It is an emirp because it is prime and its reverse (111111116117) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 711611111111 - 2²² = 711606916807 is a prime.

It is a Sophie Germain prime.

711611111111 is a modest number, since divided by 1111111 gives 71161 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (711611101111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355805555555 + 355805555556.

It is an arithmetic number, because the mean of its divisors is an integer number (355805555556).

Almost surely, 2^711611111111 is an apocalyptic number.

711611111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

711611111111 is an equidigital number, since it uses as much as digits as its factorization.

711611111111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42, while the sum is 23.

Adding to 711611111111 its reverse (111111116117), we get a palindrome (822722227228).

The spelling of 711611111111 in words is "seven hundred eleven billion, six hundred eleven million, one hundred eleven thousand, one hundred eleven".