561601066606 has 16 divisors (see below), whose sum is σ = 890188886160. Its totient is φ = 264986449920.

The previous prime is 561601066597. The next prime is 561601066639. The reversal of 561601066606 is 606660106165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28743105 + ... + 28762636.

It is an arithmetic number, because the mean of its divisors is an integer number (55636805385).

Almost surely, 2^561601066606 is an apocalyptic number.

561601066606 is a deficient number, since it is larger than the sum of its proper divisors (328587819554).

561601066606 is a wasteful number, since it uses less digits than its factorization.

561601066606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57506019.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 561601066606 in words is "five hundred sixty-one billion, six hundred one million, sixty-six thousand, six hundred six".