3641321065181 has 2 divisors, whose sum is σ = 3641321065182. Its totient is φ = 3641321065180.

The previous prime is 3641321065127. The next prime is 3641321065189. The reversal of 3641321065181 is 1815601231463.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2595211453156 + 1046109612025 = 1610966^2 + 1022795^2 .

It is a cyclic number.

It is not a de Polignac number, because 3641321065181 - 2¹⁴ = 3641321048797 is a prime.

It is a super-2 number, since 2×3641321065181² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3641321065189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1820660532590 + 1820660532591.

It is an arithmetic number, because the mean of its divisors is an integer number (1820660532591).

Almost surely, 2^{3641321065181} is an apocalyptic number.

It is an amenable number.

3641321065181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3641321065181 is an equidigital number, since it uses as much as digits as its factorization.

3641321065181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 3641321065181 in words is "three trillion, six hundred forty-one billion, three hundred twenty-one million, sixty-five thousand, one hundred eighty-one".