5661605105599 has 8 divisors (see below), whose sum is σ = 5995254515040. Its totient is φ = 5328023897856.

The previous prime is 5661605105593. The next prime is 5661605105711. The reversal of 5661605105599 is 9955015061665.

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 5661605105599 - 2¹¹ = 5661605103551 is a prime.

It is a super-2 number, since 2×5661605105599² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661605105593) 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, 16879459 + ... + 17211604.

It is an arithmetic number, because the mean of its divisors is an integer number (749406814380).

Almost surely, 2^{5661605105599} is an apocalyptic number.

5661605105599 is a deficient number, since it is larger than the sum of its proper divisors (333649409441).

5661605105599 is a wasteful number, since it uses less digits than its factorization.

5661605105599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34100849.

The product of its (nonzero) digits is 10935000, while the sum is 58.

The spelling of 5661605105599 in words is "five trillion, six hundred sixty-one billion, six hundred five million, one hundred five thousand, five hundred ninety-nine".