6171111113 has 2 divisors, whose sum is σ = 6171111114. Its totient is φ = 6171111112.

The previous prime is 6171111109. The next prime is 6171111143. The reversal of 6171111113 is 3111111716.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3105052729 + 3066058384 = 55723^2 + 55372^2 .

It is a cyclic number.

It is not a de Polignac number, because 6171111113 - 2² = 6171111109 is a prime.

It is a super-2 number, since 2×6171111113² = 76165224737984197538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6171111143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3085555556 + 3085555557.

It is an arithmetic number, because the mean of its divisors is an integer number (3085555557).

Almost surely, 2^6171111113 is an apocalyptic number.

It is an amenable number.

6171111113 is a deficient number, since it is larger than the sum of its proper divisors (1).

6171111113 is an equidigital number, since it uses as much as digits as its factorization.

6171111113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126, while the sum is 23.

The square root of 6171111113 is about 78556.4199349741. The cubic root of 6171111113 is about 1834.2328003261.

Adding to 6171111113 its reverse (3111111716), we get a palindrome (9282222829).

The spelling of 6171111113 in words is "six billion, one hundred seventy-one million, one hundred eleven thousand, one hundred thirteen".