16111331317 has 2 divisors, whose sum is σ = 16111331318. Its totient is φ = 16111331316.

The previous prime is 16111331261. The next prime is 16111331323. The reversal of 16111331317 is 71313311161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10050864516 + 6060466801 = 100254^2 + 77849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16111331317 is a prime.

It is a super-2 number, since 2×16111331317² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16111331417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8055665658 + 8055665659.

It is an arithmetic number, because the mean of its divisors is an integer number (8055665659).

Almost surely, 2^16111331317 is an apocalyptic number.

It is an amenable number.

16111331317 is a deficient number, since it is larger than the sum of its proper divisors (1).

16111331317 is an equidigital number, since it uses as much as digits as its factorization.

16111331317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 28.

Adding to 16111331317 its reverse (71313311161), we get a palindrome (87424642478).

The spelling of 16111331317 in words is "sixteen billion, one hundred eleven million, three hundred thirty-one thousand, three hundred seventeen".