561144082220 has 24 divisors (see below), whose sum is σ = 1179217009824. Its totient is φ = 224302502016.

The previous prime is 561144082199. The next prime is 561144082223. The reversal of 561144082220 is 22280441165.

It is a super-2 number, since 2×561144082220² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (561144082223) 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 7 ways as a sum of consecutive naturals, for example, 9666017 + ... + 9723896.

It is an arithmetic number, because the mean of its divisors is an integer number (49134042076).

Almost surely, 2^561144082220 is an apocalyptic number.

It is an amenable number.

561144082220 is an abundant number, since it is smaller than the sum of its proper divisors (618072927604).

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

561144082220 is a wasteful number, since it uses less digits than its factorization.

561144082220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19391369 (or 19391367 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The spelling of 561144082220 in words is "five hundred sixty-one billion, one hundred forty-four million, eighty-two thousand, two hundred twenty".