4133443661 has 2 divisors, whose sum is σ = 4133443662. Its totient is φ = 4133443660.

The previous prime is 4133443603. The next prime is 4133443667. The reversal of 4133443661 is 1663443314.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2089861225 + 2043582436 = 45715^2 + 45206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4133443661 is a prime.

It is a super-2 number, since 2×4133443661² = 34170712997322165842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4133443667) 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, 2066721830 + 2066721831.

It is an arithmetic number, because the mean of its divisors is an integer number (2066721831).

Almost surely, 2^4133443661 is an apocalyptic number.

It is an amenable number.

4133443661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4133443661 is an equidigital number, since it uses as much as digits as its factorization.

4133443661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 35.

The square root of 4133443661 is about 64291.8631010177. The cubic root of 4133443661 is about 1604.8606952655.

Adding to 4133443661 its reverse (1663443314), we get a palindrome (5796886975).

The spelling of 4133443661 in words is "four billion, one hundred thirty-three million, four hundred forty-three thousand, six hundred sixty-one".