5323365661 has 2 divisors, whose sum is σ = 5323365662. Its totient is φ = 5323365660.

The previous prime is 5323365637. The next prime is 5323365727. The reversal of 5323365661 is 1665633235.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5122264900 + 201100761 = 71570^2 + 14181^2 .

It is a cyclic number.

It is not a de Polignac number, because 5323365661 - 2¹⁷ = 5323234589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5323365611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2661682830 + 2661682831.

It is an arithmetic number, because the mean of its divisors is an integer number (2661682831).

Almost surely, 2^5323365661 is an apocalyptic number.

It is an amenable number.

5323365661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5323365661 is an equidigital number, since it uses as much as digits as its factorization.

5323365661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 40.

The square root of 5323365661 is about 72961.3984309511. The cubic root of 5323365661 is about 1746.0718052098.

Adding to 5323365661 its reverse (1665633235), we get a palindrome (6988998896).

The spelling of 5323365661 in words is "five billion, three hundred twenty-three million, three hundred sixty-five thousand, six hundred sixty-one".