5591778613 has 2 divisors, whose sum is σ = 5591778614. Its totient is φ = 5591778612.

The previous prime is 5591778583. The next prime is 5591778707. The reversal of 5591778613 is 3168771955.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5406219729 + 185558884 = 73527^2 + 13622^2 .

It is a cyclic number.

It is not a de Polignac number, because 5591778613 - 2⁵ = 5591778581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5561778613) 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, 2795889306 + 2795889307.

It is an arithmetic number, because the mean of its divisors is an integer number (2795889307).

Almost surely, 2^5591778613 is an apocalyptic number.

It is an amenable number.

5591778613 is a deficient number, since it is larger than the sum of its proper divisors (1).

5591778613 is an equidigital number, since it uses as much as digits as its factorization.

5591778613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1587600, while the sum is 52.

The square root of 5591778613 is about 74778.1961068867. The cubic root of 5591778613 is about 1774.9385537679.

The spelling of 5591778613 in words is "five billion, five hundred ninety-one million, seven hundred seventy-eight thousand, six hundred thirteen".