561322223165 has 16 divisors (see below), whose sum is σ = 735659763840. Its totient is φ = 407768819520.

The previous prime is 561322223131. The next prime is 561322223167.

561322223165 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 561322223165 - 2²² = 561318028861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561322223167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5770385 + ... + 5866854.

It is an arithmetic number, because the mean of its divisors is an integer number (45978735240).

Almost surely, 2^561322223165 is an apocalyptic number.

561322223165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

561322223165 is a deficient number, since it is larger than the sum of its proper divisors (174337540675).

561322223165 is a wasteful number, since it uses less digits than its factorization.

561322223165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11638132.

The product of its digits is 129600, while the sum is 38.

It can be divided in two parts, 561322 and 223165, that added together give a palindrome (784487).

The spelling of 561322223165 in words is "five hundred sixty-one billion, three hundred twenty-two million, two hundred twenty-three thousand, one hundred sixty-five".