3505561066555 has 16 divisors (see below), whose sum is σ = 4215198850560. Its totient is φ = 2798770527072.

The previous prime is 3505561066541. The next prime is 3505561066571. The reversal of 3505561066555 is 5556601655053.

It is a cyclic number.

It is not a de Polignac number, because 3505561066555 - 2¹⁷ = 3505560935483 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4886076 + ... + 5557414.

It is an arithmetic number, because the mean of its divisors is an integer number (263449928160).

Almost surely, 2^{3505561066555} is an apocalyptic number.

3505561066555 is a deficient number, since it is larger than the sum of its proper divisors (709637784005).

3505561066555 is a wasteful number, since it uses less digits than its factorization.

3505561066555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673458.

The product of its (nonzero) digits is 10125000, while the sum is 52.

The spelling of 3505561066555 in words is "three trillion, five hundred five billion, five hundred sixty-one million, sixty-six thousand, five hundred fifty-five".