5605566655557 has 64 divisors (see below), whose sum is σ = 8323232993280. Its totient is φ = 3327112800000.

The previous prime is 5605566655541. The next prime is 5605566655669. The reversal of 5605566655557 is 7555566655065.

It is a happy number.

It is not a de Polignac number, because 5605566655557 - 2⁴ = 5605566655541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5605566655517) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1543806132 + ... + 1543809762.

It is an arithmetic number, because the mean of its divisors is an integer number (130050515520).

Almost surely, 2^{5605566655557} is an apocalyptic number.

It is an amenable number.

5605566655557 is a deficient number, since it is larger than the sum of its proper divisors (2717666337723).

5605566655557 is a wasteful number, since it uses less digits than its factorization.

5605566655557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6826.

The product of its (nonzero) digits is 708750000, while the sum is 66.

The spelling of 5605566655557 in words is "five trillion, six hundred five billion, five hundred sixty-six million, six hundred fifty-five thousand, five hundred fifty-seven".