561684486165 has 32 divisors (see below), whose sum is σ = 982111882752. Its totient is φ = 271854888000.

The previous prime is 561684486149. The next prime is 561684486197.

It is a happy number.

561684486165 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 561684486165 - 2⁴ = 561684486149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561684486099 and 561684486108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2886651 + ... + 3075080.

It is an arithmetic number, because the mean of its divisors is an integer number (30690996336).

Almost surely, 2^561684486165 is an apocalyptic number.

561684486165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

561684486165 is a deficient number, since it is larger than the sum of its proper divisors (420427396587).

561684486165 is a wasteful number, since it uses less digits than its factorization.

561684486165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5962321.

The product of its digits is 33177600, while the sum is 60.

The spelling of 561684486165 in words is "five hundred sixty-one billion, six hundred eighty-four million, four hundred eighty-six thousand, one hundred sixty-five".