561650600109 has 32 divisors (see below), whose sum is σ = 773493202944. Its totient is φ = 362288344320.

The previous prime is 561650600087. The next prime is 561650600171. The reversal of 561650600109 is 901006056165.

It is not a de Polignac number, because 561650600109 - 2¹⁶ = 561650534573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561650602109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28954804 + ... + 28974194.

It is an arithmetic number, because the mean of its divisors is an integer number (24171662592).

Almost surely, 2^561650600109 is an apocalyptic number.

It is an amenable number.

561650600109 is a deficient number, since it is larger than the sum of its proper divisors (211842602835).

561650600109 is a wasteful number, since it uses less digits than its factorization.

561650600109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21537.

The product of its (nonzero) digits is 48600, while the sum is 39.

The spelling of 561650600109 in words is "five hundred sixty-one billion, six hundred fifty million, six hundred thousand, one hundred nine".