561312024720 has 160 divisors (see below), whose sum is σ = 1816708580352. Its totient is φ = 143097478656.

The previous prime is 561312024709. The next prime is 561312024751. The reversal of 561312024720 is 27420213165.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10499979 + ... + 10553301.

Almost surely, 2^561312024720 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 561312024720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (908354290176).

561312024720 is an abundant number, since it is smaller than the sum of its proper divisors (1255396555632).

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

561312024720 is a wasteful number, since it uses less digits than its factorization.

561312024720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55269 (or 55263 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

Adding to 561312024720 its reverse (27420213165), we get a palindrome (588732237885).

The spelling of 561312024720 in words is "five hundred sixty-one billion, three hundred twelve million, twenty-four thousand, seven hundred twenty".