561171488982 has 32 divisors (see below), whose sum is σ = 1208722367328. Its totient is φ = 172661677056.

The previous prime is 561171488957. The next prime is 561171488987. The reversal of 561171488982 is 289884171165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561171488987) 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 15 ways as a sum of consecutive naturals, for example, 2221158 + ... + 2460870.

It is an arithmetic number, because the mean of its divisors is an integer number (37772573979).

Almost surely, 2^561171488982 is an apocalyptic number.

561171488982 is an abundant number, since it is smaller than the sum of its proper divisors (647550878346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561171488982 is a wasteful number, since it uses less digits than its factorization.

561171488982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269744.

The product of its digits is 7741440, while the sum is 60.

The spelling of 561171488982 in words is "five hundred sixty-one billion, one hundred seventy-one million, four hundred eighty-eight thousand, nine hundred eighty-two".