5561305605 has 48 divisors (see below), whose sum is σ = 10474314240. Its totient is φ = 2719267200.

The previous prime is 5561305601. The next prime is 5561305619. The reversal of 5561305605 is 5065031655.

5561305605 is a `hidden beast` number, since 5 + 5 + 61 + 30 + 560 + 5 = 666.

It is not a de Polignac number, because 5561305605 - 2² = 5561305601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5561305605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561305601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78406 + ... + 131415.

It is an arithmetic number, because the mean of its divisors is an integer number (218214880).

Almost surely, 2^5561305605 is an apocalyptic number.

It is an amenable number.

5561305605 is a deficient number, since it is larger than the sum of its proper divisors (4913008635).

5561305605 is a wasteful number, since it uses less digits than its factorization.

5561305605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209882 (or 209879 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The square root of 5561305605 is about 74574.1617787287. The cubic root of 5561305605 is about 1771.7084385485.

The spelling of 5561305605 in words is "five billion, five hundred sixty-one million, three hundred five thousand, six hundred five".