3550564206561 has 32 divisors (see below), whose sum is σ = 5289268481280. Its totient is φ = 2107000653824.

The previous prime is 3550564206557. The next prime is 3550564206589. The reversal of 3550564206561 is 1656024650553.

It is a cyclic number.

It is not a de Polignac number, because 3550564206561 - 2² = 3550564206557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3550564206561.

It is not an unprimeable number, because it can be changed into a prime (3550564206521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16900710 + ... + 17109503.

It is an arithmetic number, because the mean of its divisors is an integer number (165289640040).

Almost surely, 2^{3550564206561} is an apocalyptic number.

It is an amenable number.

3550564206561 is a deficient number, since it is larger than the sum of its proper divisors (1738704274719).

3550564206561 is a wasteful number, since it uses less digits than its factorization.

3550564206561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34010345.

The product of its (nonzero) digits is 3240000, while the sum is 48.

The spelling of 3550564206561 in words is "three trillion, five hundred fifty billion, five hundred sixty-four million, two hundred six thousand, five hundred sixty-one".