4233129661 has 2 divisors, whose sum is σ = 4233129662. Its totient is φ = 4233129660.

The previous prime is 4233129653. The next prime is 4233129671. The reversal of 4233129661 is 1669213324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3039427161 + 1193702500 = 55131^2 + 34550^2 .

It is a cyclic number.

It is not a de Polignac number, because 4233129661 - 2³ = 4233129653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4233129661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4233129611) 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, 2116564830 + 2116564831.

It is an arithmetic number, because the mean of its divisors is an integer number (2116564831).

Almost surely, 2^4233129661 is an apocalyptic number.

It is an amenable number.

4233129661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4233129661 is an equidigital number, since it uses as much as digits as its factorization.

4233129661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 37.

The square root of 4233129661 is about 65062.5058001919. The cubic root of 4233129661 is about 1617.6597898721.

The spelling of 4233129661 in words is "four billion, two hundred thirty-three million, one hundred twenty-nine thousand, six hundred sixty-one".