561688846382240 has 96 divisors (see below), whose sum is σ = 1329050998686096. Its totient is φ = 224326769909760.

The previous prime is 561688846382207. The next prime is 561688846382267. The reversal of 561688846382240 is 42283648886165.

It can be written as a sum of positive squares in 8 ways, for example, as 599528101264 + 561089318280976 = 774292^2 + 23687324^2 .

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, 358570310 + ... + 360133370.

Almost surely, 2^{561688846382240} is an apocalyptic number.

It is an amenable number.

561688846382240 is an abundant number, since it is smaller than the sum of its proper divisors (767362152303856).

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

561688846382240 is a wasteful number, since it uses less digits than its factorization.

561688846382240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566562 (or 1566554 counting only the distinct ones).

The product of its (nonzero) digits is 849346560, while the sum is 71.

The spelling of 561688846382240 in words is "five hundred sixty-one trillion, six hundred eighty-eight billion, eight hundred forty-six million, three hundred eighty-two thousand, two hundred forty".