561200617209 has 16 divisors (see below), whose sum is σ = 774224524800. Its totient is φ = 361160384256.

The previous prime is 561200617157. The next prime is 561200617217. The reversal of 561200617209 is 902716002165.

561200617209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 561200617209 - 2¹¹ = 561200615161 is a prime.

It is a super-2 number, since 2×561200617209² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (561200617249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205104 + ... + 1079105.

It is an arithmetic number, because the mean of its divisors is an integer number (48389032800).

Almost surely, 2^561200617209 is an apocalyptic number.

It is an amenable number.

561200617209 is a deficient number, since it is larger than the sum of its proper divisors (213023907591).

561200617209 is a wasteful number, since it uses less digits than its factorization.

561200617209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289264.

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 561200617209 in words is "five hundred sixty-one billion, two hundred million, six hundred seventeen thousand, two hundred nine".