5550664809691 has 2 divisors, whose sum is σ = 5550664809692. Its totient is φ = 5550664809690.

The previous prime is 5550664809587. The next prime is 5550664809757. The reversal of 5550664809691 is 1969084660555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5550664809691 - 2¹⁹ = 5550664285403 is a prime.

It is not a weakly prime, because it can be changed into another prime (5550665809691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775332404845 + 2775332404846.

It is an arithmetic number, because the mean of its divisors is an integer number (2775332404846).

Almost surely, 2^{5550664809691} is an apocalyptic number.

5550664809691 is a deficient number, since it is larger than the sum of its proper divisors (1).

5550664809691 is an equidigital number, since it uses as much as digits as its factorization.

5550664809691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984000, while the sum is 64.

The spelling of 5550664809691 in words is "five trillion, five hundred fifty billion, six hundred sixty-four million, eight hundred nine thousand, six hundred ninety-one".