5581659809446 has 8 divisors (see below), whose sum is σ = 9568559673360. Its totient is φ = 2392139918328.

The previous prime is 5581659809443. The next prime is 5581659809491. The reversal of 5581659809446 is 6449089561855.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5581659809441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199344993181 + ... + 199344993208.

It is an arithmetic number, because the mean of its divisors is an integer number (1196069959170).

Almost surely, 2^{5581659809446} is an apocalyptic number.

5581659809446 is a deficient number, since it is larger than the sum of its proper divisors (3986899863914).

5581659809446 is a wasteful number, since it uses less digits than its factorization.

5581659809446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398689986398.

The product of its (nonzero) digits is 373248000, while the sum is 70.

The spelling of 5581659809446 in words is "five trillion, five hundred eighty-one billion, six hundred fifty-nine million, eight hundred nine thousand, four hundred forty-six".