561484007872 has 112 divisors (see below), whose sum is σ = 1207159424640. Its totient is φ = 258214044672.

The previous prime is 561484007869. The next prime is 561484007911. The reversal of 561484007872 is 278700484165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20997903 + ... + 21024625.

Almost surely, 2^561484007872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561484007872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603579712320).

561484007872 is an abundant number, since it is smaller than the sum of its proper divisors (645675416768).

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

561484007872 is a wasteful number, since it uses less digits than its factorization.

561484007872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27258 (or 27248 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 52.

The spelling of 561484007872 in words is "five hundred sixty-one billion, four hundred eighty-four million, seven thousand, eight hundred seventy-two".