3240561205605 has 8 divisors (see below), whose sum is σ = 5184897928992. Its totient is φ = 1728299309648.

The previous prime is 3240561205601. The next prime is 3240561205627. The reversal of 3240561205605 is 5065021650423.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3240561205605 - 2² = 3240561205601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3240561205601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108018706839 + ... + 108018706868.

It is an arithmetic number, because the mean of its divisors is an integer number (648112241124).

Almost surely, 2^{3240561205605} is an apocalyptic number.

It is an amenable number.

3240561205605 is a deficient number, since it is larger than the sum of its proper divisors (1944336723387).

3240561205605 is a wasteful number, since it uses less digits than its factorization.

3240561205605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216037413715.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 3240561205605 in words is "three trillion, two hundred forty billion, five hundred sixty-one million, two hundred five thousand, six hundred five".