42561327545361 has 8 divisors (see below), whose sum is σ = 63053818585760. Its totient is φ = 28374218363556.

The previous prime is 42561327545329. The next prime is 42561327545389. The reversal of 42561327545361 is 16354572316524.

42561327545361 is a `hidden beast` number, since 4 + 2 + 5 + 6 + 1 + 3 + 275 + 4 + 5 + 361 = 666.

42561327545361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42561327545361 - 2⁵ = 42561327545329 is a prime.

It is a super-2 number, since 2×42561327545361² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42561327545298 and 42561327545307.

It is not an unprimeable number, because it can be changed into a prime (42561327545311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 788172732295 + ... + 788172732348.

It is an arithmetic number, because the mean of its divisors is an integer number (7881727323220).

Almost surely, 2^{42561327545361} is an apocalyptic number.

It is an amenable number.

42561327545361 is a deficient number, since it is larger than the sum of its proper divisors (20492491040399).

42561327545361 is a wasteful number, since it uses less digits than its factorization.

42561327545361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576345464652 (or 1576345464646 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 54.

The spelling of 42561327545361 in words is "forty-two trillion, five hundred sixty-one billion, three hundred twenty-seven million, five hundred forty-five thousand, three hundred sixty-one".