555544609911 has 20 divisors (see below), whose sum is σ = 829913492232. Its totient is φ = 370351530288.

The previous prime is 555544609909. The next prime is 555544609931. The reversal of 555544609911 is 119906445555.

555544609911 is a `hidden beast` number, since 5 + 5 + 5 + 544 + 6 + 0 + 9 + 91 + 1 = 666.

It is not a de Polignac number, because 555544609911 - 2¹ = 555544609909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555544609931) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3097456 + ... + 3271898.

Almost surely, 2^555544609911 is an apocalyptic number.

555544609911 is a deficient number, since it is larger than the sum of its proper divisors (274368882321).

555544609911 is a wasteful number, since it uses less digits than its factorization.

555544609911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213772 (or 213763 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 54.

The spelling of 555544609911 in words is "five hundred fifty-five billion, five hundred forty-four million, six hundred nine thousand, nine hundred eleven".