5064945661 has 2 divisors, whose sum is σ = 5064945662. Its totient is φ = 5064945660.

The previous prime is 5064945649. The next prime is 5064945709. The reversal of 5064945661 is 1665494605.

5064945661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4813723161 + 251222500 = 69381^2 + 15850^2 .

It is a cyclic number.

It is not a de Polignac number, because 5064945661 - 2¹¹ = 5064943613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5064945631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2532472830 + 2532472831.

It is an arithmetic number, because the mean of its divisors is an integer number (2532472831).

Almost surely, 2^5064945661 is an apocalyptic number.

It is an amenable number.

5064945661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5064945661 is an equidigital number, since it uses as much as digits as its factorization.

5064945661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 46.

The square root of 5064945661 is about 71168.4316322905. The cubic root of 5064945661 is about 1717.3478213391.

The spelling of 5064945661 in words is "five billion, sixty-four million, nine hundred forty-five thousand, six hundred sixty-one".