5558443688 has 64 divisors (see below), whose sum is σ = 12554352000. Its totient is φ = 2256613632.

The previous prime is 5558443663. The next prime is 5558443697. The reversal of 5558443688 is 8863448555.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53783 + ... + 118361.

It is an arithmetic number, because the mean of its divisors is an integer number (196161750).

Almost surely, 2^5558443688 is an apocalyptic number.

5558443688 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5558443688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6277176000).

5558443688 is an abundant number, since it is smaller than the sum of its proper divisors (6995908312).

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

5558443688 is a wasteful number, since it uses less digits than its factorization.

5558443688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64674 (or 64670 counting only the distinct ones).

The product of its digits is 18432000, while the sum is 56.

The square root of 5558443688 is about 74554.9709140846. The cubic root of 5558443688 is about 1771.4044720050.

The spelling of 5558443688 in words is "five billion, five hundred fifty-eight million, four hundred forty-three thousand, six hundred eighty-eight".