6551869613 has 2 divisors, whose sum is σ = 6551869614. Its totient is φ = 6551869612.

The previous prime is 6551869603. The next prime is 6551869619. The reversal of 6551869613 is 3169681556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5749733929 + 802135684 = 75827^2 + 28322^2 .

It is a cyclic number.

It is not a de Polignac number, because 6551869613 - 2²⁶ = 6484760749 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6551869619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275934806 + 3275934807.

It is an arithmetic number, because the mean of its divisors is an integer number (3275934807).

Almost surely, 2^6551869613 is an apocalyptic number.

It is an amenable number.

6551869613 is a deficient number, since it is larger than the sum of its proper divisors (1).

6551869613 is an equidigital number, since it uses as much as digits as its factorization.

6551869613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 50.

The square root of 6551869613 is about 80943.6199647631. The cubic root of 6551869613 is about 1871.2066347590.

The spelling of 6551869613 in words is "six billion, five hundred fifty-one million, eight hundred sixty-nine thousand, six hundred thirteen".