6557998842808 has 192 divisors, whose sum is σ = 15651301939200. Its totient is φ = 2513885414400.

The previous prime is 6557998842793. The next prime is 6557998842841. The reversal of 6557998842808 is 8082488997556.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55386966 + ... + 55505242.

It is an arithmetic number, because the mean of its divisors is an integer number (81517197600).

Almost surely, 2^{6557998842808} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6557998842808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7825650969600).

6557998842808 is an abundant number, since it is smaller than the sum of its proper divisors (9093303096392).

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

6557998842808 is a wasteful number, since it uses less digits than its factorization.

6557998842808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118422 (or 118377 counting only the distinct ones).

The product of its (nonzero) digits is 2786918400, while the sum is 79.

The spelling of 6557998842808 in words is "six trillion, five hundred fifty-seven billion, nine hundred ninety-eight million, eight hundred forty-two thousand, eight hundred eight".