67675636181 has 2 divisors, whose sum is σ = 67675636182. Its totient is φ = 67675636180.

The previous prime is 67675636177. The next prime is 67675636253. The reversal of 67675636181 is 18163657676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48239093956 + 19436542225 = 219634^2 + 139415^2 .

It is a cyclic number.

It is not a de Polignac number, because 67675636181 - 2² = 67675636177 is a prime.

It is a super-2 number, since 2×67675636181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67675036181) 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 as a sum of consecutive naturals, namely, 33837818090 + 33837818091.

It is an arithmetic number, because the mean of its divisors is an integer number (33837818091).

Almost surely, 2^67675636181 is an apocalyptic number.

It is an amenable number.

67675636181 is a deficient number, since it is larger than the sum of its proper divisors (1).

67675636181 is an equidigital number, since it uses as much as digits as its factorization.

67675636181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 56.

The spelling of 67675636181 in words is "sixty-seven billion, six hundred seventy-five million, six hundred thirty-six thousand, one hundred eighty-one".