13333333333181 has 2 divisors, whose sum is σ = 13333333333182. Its totient is φ = 13333333333180.

The previous prime is 13333333333121. The next prime is 13333333333303. The reversal of 13333333333181 is 18133333333331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9953835700900 + 3379497632281 = 3154970^2 + 1838341^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13333333333181 is a prime.

It is a super-2 number, since 2×13333333333181² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13333333333121) 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 as a sum of consecutive naturals, namely, 6666666666590 + 6666666666591.

It is an arithmetic number, because the mean of its divisors is an integer number (6666666666591).

Almost surely, 2^{13333333333181} is an apocalyptic number.

It is an amenable number.

13333333333181 is a deficient number, since it is larger than the sum of its proper divisors (1).

13333333333181 is an equidigital number, since it uses as much as digits as its factorization.

13333333333181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 41.

The spelling of 13333333333181 in words is "thirteen trillion, three hundred thirty-three billion, three hundred thirty-three million, three hundred thirty-three thousand, one hundred eighty-one".