55689859680 has 384 divisors, whose sum is σ = 216291575808. Its totient is φ = 11728945152.

The previous prime is 55689859679. The next prime is 55689859699. The reversal of 55689859680 is 8695898655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42936792 + ... + 42938088.

It is an arithmetic number, because the mean of its divisors is an integer number (563259312).

Almost surely, 2^55689859680 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 55689859680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108145787904).

55689859680 is an abundant number, since it is smaller than the sum of its proper divisors (160601716128).

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

55689859680 is a wasteful number, since it uses less digits than its factorization.

55689859680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318 (or 2310 counting only the distinct ones).

The product of its (nonzero) digits is 186624000, while the sum is 69.

The spelling of 55689859680 in words is "fifty-five billion, six hundred eighty-nine million, eight hundred fifty-nine thousand, six hundred eighty".