6555445619 has 2 divisors, whose sum is σ = 6555445620. Its totient is φ = 6555445618.

The previous prime is 6555445543. The next prime is 6555445639. The reversal of 6555445619 is 9165445556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6555445619 - 2²⁰ = 6554397043 is a prime.

It is a super-2 number, since 2×6555445619² = 85947734527332586322, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (6555445639) 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, 3277722809 + 3277722810.

It is an arithmetic number, because the mean of its divisors is an integer number (3277722810).

Almost surely, 2^6555445619 is an apocalyptic number.

6555445619 is a deficient number, since it is larger than the sum of its proper divisors (1).

6555445619 is an equidigital number, since it uses as much as digits as its factorization.

6555445619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240000, while the sum is 50.

The square root of 6555445619 is about 80965.7064379729. The cubic root of 6555445619 is about 1871.5470072797.

The spelling of 6555445619 in words is "six billion, five hundred fifty-five million, four hundred forty-five thousand, six hundred nineteen".