5205608813 has 2 divisors, whose sum is σ = 5205608814. Its totient is φ = 5205608812.

The previous prime is 5205608803. The next prime is 5205608827. The reversal of 5205608813 is 3188065025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4644013609 + 561595204 = 68147^2 + 23698^2 .

It is a cyclic number.

It is not a de Polignac number, because 5205608813 - 2⁸ = 5205608557 is a prime.

It is a super-2 number, since 2×5205608813² = 54196726227966537938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5205608803) 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, 2602804406 + 2602804407.

It is an arithmetic number, because the mean of its divisors is an integer number (2602804407).

Almost surely, 2^5205608813 is an apocalyptic number.

It is an amenable number.

5205608813 is a deficient number, since it is larger than the sum of its proper divisors (1).

5205608813 is an equidigital number, since it uses as much as digits as its factorization.

5205608813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 5205608813 is about 72149.9051489328. The cubic root of 5205608813 is about 1733.1008808553.

The spelling of 5205608813 in words is "five billion, two hundred five million, six hundred eight thousand, eight hundred thirteen".