5563778813 has 2 divisors, whose sum is σ = 5563778814. Its totient is φ = 5563778812.

The previous prime is 5563778809. The next prime is 5563778839. The reversal of 5563778813 is 3188773655.

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., 5519449849 + 44328964 = 74293^2 + 6658^2 .

It is a cyclic number.

It is not a de Polignac number, because 5563778813 - 2² = 5563778809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5563774813) 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, 2781889406 + 2781889407.

It is an arithmetic number, because the mean of its divisors is an integer number (2781889407).

Almost surely, 2^5563778813 is an apocalyptic number.

It is an amenable number.

5563778813 is a deficient number, since it is larger than the sum of its proper divisors (1).

5563778813 is an equidigital number, since it uses as much as digits as its factorization.

5563778813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4233600, while the sum is 53.

The square root of 5563778813 is about 74590.7421400270. The cubic root of 5563778813 is about 1771.9710360032.

The spelling of 5563778813 in words is "five billion, five hundred sixty-three million, seven hundred seventy-eight thousand, eight hundred thirteen".