4561455345561 has 12 divisors (see below), whose sum is σ = 6613262400420. Its totient is φ = 3029665506720.

The previous prime is 4561455345533. The next prime is 4561455345583. The reversal of 4561455345561 is 1655435541654.

4561455345561 is a `hidden beast` number, since 4 + 5 + 6 + 1 + 4 + 55 + 34 + 556 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 248901210000 + 4312554135561 = 498900^2 + 2076669^2 .

It is not a de Polignac number, because 4561455345561 - 2⁹ = 4561455345049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4561455345498 and 4561455345507.

It is not an unprimeable number, because it can be changed into a prime (4561455345521) 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 11 ways as a sum of consecutive naturals, for example, 942057750 + ... + 942062591.

It is an arithmetic number, because the mean of its divisors is an integer number (551105200035).

Almost surely, 2^{4561455345561} is an apocalyptic number.

It is an amenable number.

4561455345561 is a deficient number, since it is larger than the sum of its proper divisors (2051807054859).

4561455345561 is a wasteful number, since it uses less digits than its factorization.

4561455345561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884120616 (or 1884120613 counting only the distinct ones).

The product of its digits is 21600000, while the sum is 54.

The spelling of 4561455345561 in words is "four trillion, five hundred sixty-one billion, four hundred fifty-five million, three hundred forty-five thousand, five hundred sixty-one".