556561606605 has 8 divisors (see below), whose sum is σ = 890498570592. Its totient is φ = 296832856848.

The previous prime is 556561606481. The next prime is 556561606613. The reversal of 556561606605 is 506606165655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 556561606605 - 2⁷ = 556561606477 is a prime.

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, 18552053539 + ... + 18552053568.

It is an arithmetic number, because the mean of its divisors is an integer number (111312321324).

Almost surely, 2^556561606605 is an apocalyptic number.

It is an amenable number.

556561606605 is a deficient number, since it is larger than the sum of its proper divisors (333936963987).

556561606605 is a wasteful number, since it uses less digits than its factorization.

556561606605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37104107115.

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 556561606605 in words is "five hundred fifty-six billion, five hundred sixty-one million, six hundred six thousand, six hundred five".