6559779558 has 8 divisors (see below), whose sum is σ = 13119559128. Its totient is φ = 2186593184.

The previous prime is 6559779547. The next prime is 6559779571. The reversal of 6559779558 is 8559779556.

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

6559779558 is an admirable number.

It is a super-3 number, since 3×6559779558³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546648291 + ... + 546648302.

It is an arithmetic number, because the mean of its divisors is an integer number (1639944891).

Almost surely, 2^6559779558 is an apocalyptic number.

6559779558 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6559779558 is a wasteful number, since it uses less digits than its factorization.

6559779558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093296598.

The product of its digits is 119070000, while the sum is 66.

The square root of 6559779558 is about 80992.4660570352. The cubic root of 6559779558 is about 1871.9593557406.

The spelling of 6559779558 in words is "six billion, five hundred fifty-nine million, seven hundred seventy-nine thousand, five hundred fifty-eight".