561558847207 has 4 divisors (see below), whose sum is σ = 561561850720. Its totient is φ = 561555843696.

The previous prime is 561558847193. The next prime is 561558847253. The reversal of 561558847207 is 702748855165.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561558847207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561558847007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1201263 + ... + 1601920.

It is an arithmetic number, because the mean of its divisors is an integer number (140390462680).

Almost surely, 2^561558847207 is an apocalyptic number.

561558847207 is a deficient number, since it is larger than the sum of its proper divisors (3003513).

561558847207 is a wasteful number, since it uses less digits than its factorization.

561558847207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003512.

The product of its (nonzero) digits is 18816000, while the sum is 58.

The spelling of 561558847207 in words is "five hundred sixty-one billion, five hundred fifty-eight million, eight hundred forty-seven thousand, two hundred seven".