55558350660 has 144 divisors (see below), whose sum is σ = 162184958208. Its totient is φ = 14209090560.

The previous prime is 55558350583. The next prime is 55558350667. The reversal of 55558350660 is 6605385555.

55558350660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55558350667) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6511317 + ... + 6519843.

It is an arithmetic number, because the mean of its divisors is an integer number (1126284432).

Almost surely, 2^55558350660 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 55558350660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81092479104).

55558350660 is an abundant number, since it is smaller than the sum of its proper divisors (106626607548).

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

55558350660 is a wasteful number, since it uses less digits than its factorization.

55558350660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8714 (or 8681 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 48.

The spelling of 55558350660 in words is "fifty-five billion, five hundred fifty-eight million, three hundred fifty thousand, six hundred sixty".