561650600087 has 2 divisors, whose sum is σ = 561650600088. Its totient is φ = 561650600086.

The previous prime is 561650600051. The next prime is 561650600171. The reversal of 561650600087 is 780006056165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561650600087 - 2¹⁰ = 561650599063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561650600887) 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 as a sum of consecutive naturals, namely, 280825300043 + 280825300044.

It is an arithmetic number, because the mean of its divisors is an integer number (280825300044).

Almost surely, 2^561650600087 is an apocalyptic number.

561650600087 is a deficient number, since it is larger than the sum of its proper divisors (1).

561650600087 is an equidigital number, since it uses as much as digits as its factorization.

561650600087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 561650600087 in words is "five hundred sixty-one billion, six hundred fifty million, six hundred thousand, eighty-seven".