561363645431340 has 36 divisors (see below), whose sum is σ = 1702803057808944. Its totient is φ = 149696972114976.

The previous prime is 561363645431297. The next prime is 561363645431363. The reversal of 561363645431340 is 43134546363165.

561363645431340 is a `hidden beast` number, since 5 + 6 + 1 + 3 + 6 + 3 + 64 + 543 + 1 + 34 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1559343459352 + ... + 1559343459711.

Almost surely, 2^{561363645431340} is an apocalyptic number.

It is an amenable number.

561363645431340 is an abundant number, since it is smaller than the sum of its proper divisors (1141439412377604).

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

561363645431340 is a wasteful number, since it uses less digits than its factorization.

561363645431340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118686919078 (or 3118686919073 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 54.

The spelling of 561363645431340 in words is "five hundred sixty-one trillion, three hundred sixty-three billion, six hundred forty-five million, four hundred thirty-one thousand, three hundred forty".