6559408939128 has 64 divisors (see below), whose sum is σ = 16422838024320. Its totient is φ = 2183229014400.

The previous prime is 6559408939091. The next prime is 6559408939141. The reversal of 6559408939128 is 8219398049556.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75795963 + ... + 75882453.

It is an arithmetic number, because the mean of its divisors is an integer number (256606844130).

Almost surely, 2^{6559408939128} is an apocalyptic number.

It is an amenable number.

6559408939128 is an abundant number, since it is smaller than the sum of its proper divisors (9863429085192).

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

6559408939128 is a wasteful number, since it uses less digits than its factorization.

6559408939128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91148 (or 91144 counting only the distinct ones).

The product of its (nonzero) digits is 167961600, while the sum is 69.

The spelling of 6559408939128 in words is "six trillion, five hundred fifty-nine billion, four hundred eight million, nine hundred thirty-nine thousand, one hundred twenty-eight".