5505005055561 has 16 divisors (see below), whose sum is σ = 8008324559040. Its totient is φ = 3335931501120.

The previous prime is 5505005055541. The next prime is 5505005055643. The reversal of 5505005055561 is 1655505005055.

It is not a de Polignac number, because 5505005055561 - 2³³ = 5496415120969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5505005055521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10623070 + ... + 11129223.

It is an arithmetic number, because the mean of its divisors is an integer number (500520284940).

Almost surely, 2^{5505005055561} is an apocalyptic number.

It is an amenable number.

5505005055561 is a deficient number, since it is larger than the sum of its proper divisors (2503319503479).

5505005055561 is a wasteful number, since it uses less digits than its factorization.

5505005055561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21759976.

The product of its (nonzero) digits is 468750, while the sum is 42.

The spelling of 5505005055561 in words is "five trillion, five hundred five billion, five million, fifty-five thousand, five hundred sixty-one".